统计与概率
数据分析、概率分布、假设检验与统计方法。
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select the correct answer from each drop - down menu. this dot plot sho…
1. 22 2. 4 3. 8 4. 13
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complete the sentences to explain why neels grandfathers book is import…
Neel's grandfather once worked with elephants on Earth and **collected holograms of them**. Nisha is reading a book **Neel's grandfather wrote**. As a result, Neel and Nisha **dev…
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t ( 7\frac{2}{3} + 2\frac{7}{12} ) e ( \frac{3}{8} \times \frac{5}{6} )…
T: $10\frac{1}{4}$ E: $\frac{5}{16}$ R: $7\frac{1}{2}$ X: $5\frac{5}{7}$
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the table below shows the price of a new cell phone and the length of t…
(a) $\hat{y} = -23.67x + 1216.02$ (b) $-0.99$ (c) The correlation coefficient indicates a very strong negative linear fit between time since release and the phone's price; as time…
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8-122. an arithmetic sequence has f(8) = 1058 and f(13) = 116. write an…
The equation for the sequence is $f(n) = 2n + 90$ (or $f(n) = 92 + (n-1)2$), and the first term $f(1)=92$.
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which of each function below g(-2) one value of x for = 0 if f(x) = x² …
Approximately 138,570,442 --- Note: The problem involving $g(x)-f(x)$ is incomplete as the definition of $g(x)$ is missing, so only the population growth problem can be solved wit…
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ava flipped through a dessert cookbook with cookie recipes from around …
# Explanation: ## Step1: Identify the range We need to find recipes with milk amount \(> 1\) cup and \(< 1\frac{1}{4}\) cups. The values between \(1\) and \(1\frac{1}{4}\) (which …
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complete the table and write the equation for the relationship shown in…
### Completed Table (x, y): (0, 0), (2, 1), (4, 2), (6, 3), (8, 4), (10, 5), (12, 6), (14, 7), (16, 8), (18, 9), (20, 10) ### Equation: $y = \frac{1}{2}x$
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enter the correct answers in the boxes. show hints \\(\\frac{3}{4}=\\fr…
12
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a punch recipe calls for 3 cups of apple juice for every 4 cups of cran…
No, Jack did not use the correct ratio. The recipe's apple juice to cranberry juice ratio is $3:4$ ($\frac{3}{4}$), while Jack used a ratio of $9:13$ ($\frac{9}{13}$), which is no…
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3. polly buys 14 cupcakes for a party. the bakery puts them into boxes …
a. 4 boxes. 14 cupcakes divided by 4 per box is 3.5, and we need a whole box for the remaining 2 cupcakes, so 4 total boxes are required. b. The fraction of the last box that is e…
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2. a coffee shop uses 4 liters of milk every day. a. if there are 15 li…
## Part a: After 3 days, more milk will need to be purchased. In 3 days, the shop uses $3\times4=12$ liters, leaving $15-12=3$ liters, which is not enough for the 4th day's usage.…
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20. at a summer fair, the probability that a visitor eats funnel cake a…
0.79
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2. a person who weighs 200 pounds on earth would weigh abo on the moon.…
Let's solve the proportion \(\frac{7}{2y + 5}=\frac{3}{y}\) step by step. ### Step 1: Cross - multiply When we have a proportion \(\frac{a}{b}=\frac{c}{d}\), we can cross - multip…
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directions: use this information to answer parts a and b. the rate at w…
21
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if an economy is producing at full employment, it means that: a. the ec…
b. the economy is producing along its production possibilities curve.
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be computed when population variance is known using $se = \\frac{\\sigm…
(3, 3), (3, 5), (3, 7), (5, 3), (5, 5), (5, 7), (7, 3), (7, 5), (7, 7) ### 2. Construct a sampling distribution table and compute for the mean of each sample.
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when economists say the quantity supplied of a product has decreased, t…
a. price of the product has fallen, and consequently, suppliers are producing less of it.
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lena skied downhill at a steady speed on a 3 - mile slope. she reached …
1. The fraction representing Lena's speed is $\frac{3}{\frac{1}{4}}$ 2. Lena's speed in miles per hour is 12
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lena skied downhill at a steady speed on a 3-mile slope. she reached th…
$\frac{3}{\frac{1}{4}}$
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nicholas has 3 9/10 cups of powdered sugar. he sprinkles 4/5 of the sug…
$3\frac{1}{10}$
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of the cakes at sharons bakery, 3/4 have chocolate frosting. of the cak…
$\frac{3}{16}$
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at the sullivan zoo, 1/2 of the animals are primates. of the primates, …
\(\frac{1}{6}\)
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on friday, tisha sold 5 pitchers of lemonade from her lemonade stand. o…
\( 1\frac{2}{3} \) (or \( \frac{5}{3} \))
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case 5th grade language arts 11. what does the word lingered mean as it…
D. stayed B. "She looked down into a crevasse in the rocks and saw the missing lamb standing at the bottom. He could not get out." (paragraph 13)
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on monday a team of street sweepers cleaned 1/2 of a city block. tuesda…
$\frac{3}{2}$ (or $1\frac{1}{2}$)
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queso recipe cheese (oz.) \t\t\t\t\t\t\t\t\ttotal \t\t\t\t\t\t\t\t\t4 p…
To find the amounts in Hector's tripled queso: 1. Start with the base recipe: 4 oz of cheese and 2 peppers. 2. Multiply each ingredient quantity by 3 (since "triple" means 3 times…
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1) how does the amount of cheese in the recipe compare to the amount of…
There are 2 ounces of cheese for every 1 pepper. The amount of cheese is twice the amount of peppers (by count) in the recipe.
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2 determine whether each sequence is geometric. if so, state the common…
To determine if a sequence is geometric, we check if the ratio between consecutive terms is constant (this constant is the common ratio \( r \)). A geometric sequence has the form…
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welcome back to umber line disc golf\! the number line is divided into …
4
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what i have learned activity 2 a. find the values for each of the follo…
### Part A: Finding \( t_{\alpha/2} \) or \( t_{\alpha} \) values #### 1. \( t_{\alpha/2} \) and \( n = 16 \) for 99% confidence interval ## Step 1: Calculate degrees of freedom (…
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eli has 12 eggs. he uses his grandpa’s recipe to bake 4 loaves of chall…
\(4 \times 2\)
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the amount of money owed on a certain type of loan has two components: …
A. $f(x) = 298.00 - 220.93(1.005)^{x-1}$
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11. modeling real life seven friends each run an equal part of a 5 - ki…
$\frac{5}{7}$
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the table and scatter plot show the time spent watching tv, x, and the …
| Time spent watching TV (in hours) | Observed time spent doing homework (in hours) | Predicted time spent doing homework (in hours) | Residual (in hours) | |---|---|---|---| | 12…
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the table shows the amount of paint in different cans, measured in quar…
B. Cans B and C (assuming the table’s values make their sum >1) Wait, no – wait, maybe the original problem (common in textbooks) has: Can A: \( \frac{1}{4} \) qt, Can B: \( \frac…
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determine if each expression is less than, equal to, or greater than 1.…
- Less than 1: \(\frac{4}{9}+\frac{2}{9}\) - Equal to 1: \(\frac{4}{9}+\frac{5}{9}\) - Greater than 1: \(\frac{4}{9}+\frac{7}{9}\)
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a salad dressing recipe includes \\(\\frac{4}{5}\\) cup of lime juice f…
$\frac{2}{5}$ c of lime juice per c of yogurt
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which expression has a value greater than 1? \\(\frac{5}{10} + \frac{6}…
\(\boldsymbol{\frac{5}{10}+\frac{6}{10}}\) (since its value \(1.1\) is greater than \(1\))
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a cleaning spray contains \\(\\frac{1}{2}\\) cup of vinegar for every 4…
$\frac{1}{8}$ c of vinegar per tsp of lemon oil
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a cleaning spray contains \\(\\frac{1}{2}\\) cup of vinegar for every 4…
$\frac{1}{4}$ c of vinegar is needed for 2 tsp of lemon oil.
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a direct relationship exists when: a. there is no association between t…
b. one variable increases and the other variable increases.
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the table and scatter plot show the time spent texting, x, and the time…
| Time spent texting (in hours) | Observed time spent exercising (in hours) | Predicted time spent exercising (in hours) | Residual (in hours) | |---|---|---|---| | 4.1 | 5.51 | 5…
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the birth of pro hockey 2 rewind to 1900. the main hockey league was fo…
B. players who are not paid to play
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the table and scatter plot show the number of hours worked, x, and the …
| Number of hours worked | Observed amount spent on entertainment (in dollars) | Predicted amount spent on entertainment (in dollars) | Residual (in dollars) | |------------------…
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review: introductions great! answer one more correctly to continue. hig…
safety and security
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41. modeling real life when a swimmer does the breaststroke, the functi…
When using graphing technology, the swimmer's speed is maximized at approximately $t \approx 0.55$ seconds (the exact value may vary slightly by tool, but is around 0.5-0.6 second…
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the table and scatter plot show the number of hours worked, x, and the …
| Number of hours worked | Observed amount spent on entertainment (in dollars) | Predicted amount spent on entertainment (in dollars) | Residual (in dollars) | |---|---|---|---| |…
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1. the dot plot shows the number of quarts of water that 21 players dra…
C. 9
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student painters, which specializes in painting the exterior of residen…
(a) $6720$ ways (b) $336$ ways (c) $7056$ ways --- ### Second Problem (True/False)
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the right sort of risks (part 2) there is some evidence that adolescent…
A. An experiment designed to measure the ability to resist immediate reward
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cool down lesson 7: revisit percentages cool down: fundraising for the …
\( 0.6g = 54 \) (where \( g \) is Noah's fundraising goal in dollars) ### Sub - question 2
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in a state lottery, there are 14 finalists who are eligible for the big…
Lottery prize ways: 2184 (a) Possible seven-digit numbers: 9000000 (b) Possible international numbers: 8100000000
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6 farrah listed a group of decimals, fractions, and percentages in orde…
B. $65\%, \frac{5}{8}, 0.58, \frac{1}{2}, 49\%, 0.45$
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a warranty identification number for a certain product consists of a le…
1. Warranty identification numbers: $23400000$ 2. (a) Unrestricted passwords: $60466176$ 2. (b) Alternating character passwords: $2433600$
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question 1-9 the function ( f(x) = 12600(1 + 0.05)^x ) models the fish …
about 14,586
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computers manufactured by a certain company have a serial number consis…
1. 260000 sets 2. 45697600 different plates
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lilly can earn \\$6 for mowing the grassed for half hours each week. do…
no constant difference
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the new shanghai restaurant offers a choice of three appetizers, five c…
165 different lunches 7290 models
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26. at a local store, 4 bagels and 4 cups of coffee cost $9.20. the cos…
### Let Statements: Let \( x \) be the cost of a bagel (in dollars) and \( y \) be the cost of a cup of coffee (in dollars). ### Equations: From "4 bagels and 4 cups of coffee cos…
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a new state employee is offered a choice of eight basic health plans, s…
1. 192 different plans 2. 720 different code words
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analyzing quantities on a graph the graph shows the relationship betwee…
For every dollar you spend, you can get $\frac{1}{2}$ pounds of grapes. For each pound of grapes, you would need $\$$2
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you got the last problem right - keep it up! what value is the arrow po…
5/9
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what value is the arrow pointing to? enter your answer as a reduced one…
1/5
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given the function defined in the table below, find the average rate of…
$-11$
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of the function over the interval $1 \\leq x \\leq 4$ $\\begin{array}{|…
3
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of the function over the interval $4 \\leq x \\leq 10$.\ \ | $x$ | $f(x…
$-1$
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a coin is tossed four times and the sequence of heads (h) and tails (t)…
1. (a) 16 (b) HHHH, HHHT, HHTH, HHTT, HTHH, HTHT, HTTH, HTTT, THHH, THHT, THTH, THTT, TTHH, TTHT, TTTH, and TTTT 2. 50
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reasoning which of these is the best estimate for 330% of 30? greater t…
First, convert \(330\%\) to a decimal: \(330\%=\frac{330}{100} = 3.3\). Then calculate \(3.3\times30=99\). Now, \(3\times30 = 90\). Since \(99>90\), the value \(330\%\) of \(30\) …
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lynbrook west, an apartment complex financed by the state housing finan…
1. 12 different rates 2. 64 blackjack hands
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henry collected the following data from a random sample. | x | 1 | 3 | …
The remaining three points plotted are: 1. Point at $(6, 6)$ 2. Point at $(7, 5)$ 3. Point at $(9, 7)$
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writing and graphing equations in two variables instruction active desc…
No, the tub will be empty by then.
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question 3: choose the percent of the circle that is colored. 20% 40% 5…
Question 3: 67% Question 4: 75% (note: 75% is not listed in the provided options, but it is the exact percentage of the colored portion; if restricted to given options, the closes…
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the data seems to have a linear trend. so, melissa wants to find a line…
$a = -0.914$ $b = 9.558$ $r^2 = 0.885$ $r = -0.941$ The linear equation that best fits the data is $y = -0.914x + 9.558$ When $x=1$, $y = 8.644$
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melissa collected the following data from a random sample. | x | 2 | 3 …
The remaining three points plotted on the scatter plot are: 1. Point at $(6, 5)$ 2. Point at $(7, 2)$ 3. Point at $(9, 2)$
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1 ethan and bridget earn money by babysitting. last week, ethan earned …
A. Bridget earned more money per hour than Ethan.
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the scatter plot shows the time spent watching tv, x, and the time spen…
(a) $y = -0.71x + 25.84$ (b) 17.32 hours
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the scatter plot shows the number of hours worked, x, and the amount of…
(a) $y = 0.75x + 7.00$ (b) $\$14.50$
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by attempting this quiz/exam, i verify: - i will adhere to the honor co…
D. Gilgamesh's mother
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scatter plot shows the time spent texting, x, and the time spent exerci…
(a) $y = -0.80x + 8.50$ (b) $3.70$ hours
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by attempting this quiz/exam, i verify: - i will adhere to the honor co…
A. It caused him to confront his own mortality.
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homophones are words that sound alike but have different spellings and …
### 1. Respuesta para la primera oración: # Explicación: ## Paso 1: Analizar el contexto La primera oración es "Lisa raised her ____ in doubt at Reggie's story. He was a ____ liar…
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choosing solutions based on the context of the problem the temperature,…
All values of \(t\) must be positive. A viable solution is (10, 50).
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a company that makes haircare products had 2,000 people try a new shamp…
0.7
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2. what is usually meant by the phrase <i>world literature</i>? literat…
literature written by writers from different parts of the world
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part 1 of 2 a company that makes healthcare products had 2,000 people t…
The value of \(p\) is \(0.7\), so the proportion is \(\frac{14}{2000}=\frac{0.7}{100}\) (the box should be filled with 100, and the percentage \(p = 0.7\)).
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the rabbit population in a certain area is 500% of last year’s populati…
60
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dan is riding his bike. the number of revolutions (turns) his wheels ma…
(a) $\frac{1}{10}$ revolution(s) (b) $\frac{1}{10}$
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one concept in \on the arsenal of democracy\ is america following its s…
Self-interest includes helping our allies defend themselves.
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instructions: enter your jeopardy gar done, click save & finish. dismis…
s: 100 - point question: \( \boldsymbol{300} \) 200 - point question: \( \boldsymbol{2} \) 300 - point question: \( \boldsymbol{400} \) 400 - point question: \( \boldsymbol{250} \…
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mastering concepts and skills 1. short songs? david’s ipod has about 10…
Let's solve problem 1(a) first: ### Problem 1(a) We have a population of song play times with mean $\mu = 225$ seconds and standard deviation $\sigma = 60$ seconds. We take an SRS…
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the rabbit population in a certain area is 500% of last year’s populati…
\(\frac{300}{w}=\frac{\boldsymbol{500}}{\boldsymbol{100}}\)
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use of the machine. the total cost, c, of making n copies at either sto…
1. Number of copies for equal cost: 15 2. Small number of copies (e.g., 5): Choose Store Z (lower cost: $4 vs. $10 at Store W) 3. Large number of copies (e.g., 20): Choose Store W…
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. shane broke the glass in his moms favorite picture frame. he decided …
$\$42$
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chau is walking. the number of calories he has burned varies directly w…
(a) 2 calorie(s) (b) 2
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4. in october it snowed 0.9 inches. it snowed 0.6 inches less the follo…
0.3 inches
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chau is walking. the number of calories he has burned varies directly w…
(a) 2 calorie(s) (b) 2
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the time spent dancing (minutes) and the amount of calories burned can …
The second table: | Time (t) | Calories (c) | |----------|--------------| | 0 | 0 | | 5 | 27.5 | | 10 | 55 | | 15 | 82.5 |
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pablo is riding his bike. the number of revolutions (turns) his wheels …
(a) 4 feet (b) $\frac{1}{4}$
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graph the system of equations. choose the correct answer below. help me…
B