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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for a math project, students pick cards numbered between 1 and 6 and wr…
1
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a cereal company asked people about how much cereal they ate. eating ce…
20
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estimate the product. round each factor to the nearest hundred, then mu…
200000
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estimate the product. round the first factor to the nearest hundred, ro…
81000
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estimate the product. round the first factor to the nearest ten, round …
63000
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identify the correlation coefficient r that is most likely to correspon…
\( r = 0.05 \)
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going into the final exam, which will count as two tests, sharon has te…
84
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mrs hale: id hate to have men coming into my kitchen, snooping around a…
"places in proper order"
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use the aleks graphing calculator to solve the equation. \\(2\\log(4 - …
# Explanation: ## Step1: Define the functions Let \( y_1 = 2\log(4 - x) \) and \( y_2=2 - x \). We need to find the \( x \)-values where the graphs of these two functions intersec…
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read the lines from the poem \the dragonfly.\ you dart into the shadow …
hides
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people spun a wheel that had the numbers from 1 to 5 on it. spinning a …
5
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which model shows that it was sunny \\(\frac{2}{3}\\) of the days in ju…
The third model (the right - most one) shows that it was sunny \(\frac{2}{3}\) of the days in June.
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plot the following numbers on the number line: -4, -1/2, 0, 1 1/2, 3
The numbers are plotted on the number line in the order: $-4$ (leftmost), $-\frac{1}{2}$, $0$, $1\frac{1}{2}$, $3$ (rightmost), with each point positioned at its corresponding val…
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activity 3: which is growing faster? noah is depositing money in his ac…
1. Both Noah and Elena started out with the same amount of money ($\$60$). Noah's initial amount is seen at the $w=0$ point on his graph, and Elena's initial amount is the constan…
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what best describes the p - value, and how does it relate to the replic…
The p - value is the probability that the results of an experiment happened by random chance. It connects to the replication crisis because though data reported with low p - value…
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1. is the following function linear or nonlinear? how do you know? 2. w…
1. The function is nonlinear. A linear function graphs as a straight line, but these points form a curved path, so it does not have a constant rate of change. 2. The equation of t…
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hay 18 pies en 6 yardas. completa la tabla. pies\tyardas \t 3\t \t12 ¿c…
Hay 3 pies en 1 yarda. Para la tabla: - Cuando hay 3 pies, hay 1 yarda. - Cuando hay 12 yardas, hay 36 pies.
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the line models the depth of the water in a small fountain during a sev…
6
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there are four tanks of water. the amount of water in gallons, a, in ta…
1. Tank B started out with more water. 2. \(B = 400 - 5t\) 3. Tank A is filling up (positive coefficient of \(t\) in its function), Tank B is draining out (negative coefficient of…
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6. here is a graph of the function. label the axes. label at least two …
a. The two quantities are **number of feet** and **number of yards**. Independent variable: Number of feet Dependent variable: Number of yards (depends on the number of feet) b. L…
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un automóvil puede recorrer 65 millas en 1 hora. completa la tabla. hor…
La tabla completada es: | Horas | Millas | |-------|--------| | 1 | 65 | | 3 | 195 | | 5 | 325 | El tiempo que le toma al auto recorrer 325 millas es 5 horas.
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cheng, hans, and reuben made flyers last friday. the table below shows …
Time spent per flyer by Chang: 5 minutes Time spent per flyer by Hans: 4 minutes Time spent per flyer by Reuben: 5 minutes The person who worked the fastest: Hans
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charlie is going for a run. he runs at a speed of 4 miles per hour for …
3.2 hours
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a boy is 27 inches tall. five months later, he is 30 inches tall. what …
The percent of change is approximately $11.11\%$ (or exactly $\frac{100}{9}\%$)
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for each table, determine whether it shows that x and y are proportiona…
Table 1: Not proportional Table 2: Proportional, $y$ is $\frac{1}{2}$ times $x$
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wednesday 1/28 sarahs dog had 7 puppies. three of them are male. what p…
1. Approximately 57.14% of the puppies are female. 2. 15% of 90 is 13.5. 3. The boy's percent of height change is approximately 11.11%.
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complete the sentence. dirk knew that he had heard the word auspicious …
could he use the word in a sentence
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for each table, determine whether it shows that x and y are proportiona…
Table 1: Proportional, $y$ is 5 times $x$ Table 2: Not proportional
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for each table, determine whether it shows that x and y are proportiona…
Table 1: Not proportional Table 2: Proportional, $y$ is $\frac{3}{2}$ times $x$
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8. $2\\frac{2}{3}\\cdot\\frac{5}{6}=\\underline{\\quad\\quad}$ 9. $\\fr…
\(2\frac{2}{9}\) ### Problem 9
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7. abigail is making flower bouquets. she has 16 roses and 2 carnations…
8 ### Problem 8
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for each table, determine whether it shows that x and y are proportiona…
Table 1: Not proportional Table 2: Proportional, $y$ is $4$ times $x$
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8. the school cafeteria offered a choice of hamburgers or tacos to 7th …
60
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topic 6-1 homework name hour 4 1.) you drop a ball from a height of 10 …
### Completed Table: | Bounce | Height (ft) | |--------|-------------| | 0 | 10 | | 1 | 9 | | 2 | 8.1 | | 3 | 7.29 | | 4 | 6.561 | | 5 | 5.9049 | | 6 | 5.31441 | ### Additional An…
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3. tickets to a show cost $5.50 for adults and $4.25 for students. a fa…
The estimated total cost is approximately \$24 (or \$23 - \$24 range, common estimate \$24). ### Part b: Exact cost
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2) an investment of $75,000 increases at a rate of 12.5% per year. find…
1. The value of the investment after 30 years is approximately $\$2,811,075$ 2. Population model: $P(t) = 1573(1.02)^t$ The bear population after 10 years is approximately 1917
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in a board game, a certain number of points is awarded to a player upon…
$f(4) = 17$, meaning when a 4 is rolled on the die, the player is awarded 17 points. This interpretation is not valid in the context of the problem. $f(4.5) = 19$, meaning when a …
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2. the following data consists of the weights, in pounds, of 24 high sc…
### Cumulative Frequency Table: | Interval | Frequency | Cumulative Frequency | |----------|-----------|----------------------| | 51 - 100 | 6 | 6 | | 100 - 150| 6 | 12 | | 150 - …
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the pleasure of writing by a. a. milne (excerpt) the pleasure of writin…
sharing an exchange with a husband and wife about art
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write \>\ , \=\ or \<\ to compare the fractions. 1. \\(\\frac{8}{20}\\)…
s: 1. $\frac{8}{20}<\frac{3}{6}$ 2. $\frac{1}{10}<\frac{1}{4}$ 3. $\frac{1}{5}<\frac{5}{10}$ 4. $\frac{5}{15}<\frac{7}{12}$ 5. $\frac{2}{4}>\frac{10}{40}$ 6. $\frac{2}{6}<\frac{20…
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18. higher order thinking write an addition and subtraction problem and…
$x = \frac{7}{12}$ ## Word Problem Example: A rope has a total length of $\frac{3}{4}$ meters. One segment of the rope is $\frac{1}{6}$ meters long. What is the length of the rema…
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select the correct text in the passage. which sentence most refines the…
But when I have a new nib in my pen, then I can go straight from my breakfast to the blotting - paper, and a new sheet of foolscap fills itself magically with a stream of blue - b…
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if rain is falling at 3 inches per hour, how many hours will it take to…
It will take $\frac{7}{3}$ (or approximately 2.33) hours.
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the pleasure of writing by a. a. milne (excerpt) the pleasure of writin…
D. There is a lot to appreciate in the simple details of writing.
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evaluate the expression. $(7.5 \\times 10^4) \\div (3 \\times 10^1)$ $?…
$2.5 \times 10^3$
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tdq 1 how does tish describe mr. hayward when she first meets him, and …
(Example response, assuming context from *If Beale Street Could Talk*): Tish describes Mr. Hayward as having a stiff, formal demeanor (e.g., “he sat very straight” or “spoke in a …
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evaluate the expression. $(6.6 \\times 10^{-1}) \\div (6 \\times 10^{-3…
$1.1 \times 10^{2}$
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on friday nights, a television network airs four sitcoms and three dram…
1. The set containing only the show in the Friday night line-up with the worst cast: No 2. The set containing the drama most watched by women and the drama least watched by men in…
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evaluate the expression. (5.5 × 10⁻³) ÷ (5 × 10⁻⁴) ? × 10
$1.1 \times 10^{1}$
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government data show that the country is currently producing at the lev…
1. The economy is operating inefficiently. The production point of 2,000 bicycles and 30,000 pairs of shoes falls inside the PPF, meaning resources are underutilized, and the econ…
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rewrite the division sentence to show how we shared thirds. 1 ÷ 3 = \\(…
$3\text{ thirds} \div 3 = 1\text{ third}$ (Filling the boxes with "3 thirds", "3", "1 third" respectively)
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select all the true sentences. 616,801 > 618,810; 188,160 > 686,108; 68…
The only true sentence is \(688,117>686,118\) (the last option).
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5 practice problems b from an earlier course a. find 1% of 680. b. find…
a. 6.8 b. 156.4 c. 94.3
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sarah’s dog had 7 puppies. three of them are male. what percentage of t…
Approximately 57.14% of the puppies are female.
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paradox a paradox is a seemingly contradictory statement which actually…
Contradiction: Dieting is supposed to reduce fat, but it can lead to weight gain. Explanation: Restrictive dieting may slow metabolism, cause overeating later, or create unhealthy…
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evaluate the expression. (3.4 × 10²) × (2 × 10³) ? × 10
$6.8 \times 10^5$
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evaluate the expression. $(1.2 \\times 10^3) \\times (7 \\times 10^{-1}…
$8.4 \times 10^{2}$
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evaluate the expression. (1.4 × 10⁷) × (2.5 × 10⁻⁴) ? × 10
$3.5 \times 10^3$
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evaluate the expression. $(4.1 \\times 10^{-2}) \\times (2 \\times 10^{…
$8.2 \times 10^{2}$
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evaluate the expression. $(3.2 \\times 10^4) \\times (1.5 \\times 10^3)…
$7$
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below is the table of values of a function. write the output when the i…
$3n$
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5) breaking 28 items up into 7 groups will have ____ in each group.
4 tenths (or $\frac{4}{10}$)
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the system of equations is solved using the linear combination method. …
There are no solutions to the system because the equations represent parallel lines.
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4) 72 tenths broken up into 9 groups gives ____ in each group.
8 tenths (or $\frac{8}{10}$)
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check understanding 1. a snack shack sells trail mix packs and bottles …
| Trail mix packs | 2 | 4 | 12 | 20 | |-----------------|---|---|----|----| | Bottles of water | 3 | 6 | 18 | 30 |
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tyler is ordering a taxi from an online taxi service. he has to pay a f…
The \(y\) - value when \(x = 1\) represents the total cost (in dollars) that Tyler has to pay for traveling 1 mile in the taxi (including the flat charge to order the taxi and the…
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answer the questions below. (a) jessica works at adventure fun park. sh…
(a) daily number of tickets sold (b) amount of medication taken (c) C
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directions: solve each equation. 11) 0.04 ÷ 2 = 12) 0.15 ÷ 5 = 13) 0.42…
11) $0.02$ 12) $0.03$ 13) $0.06$ 14) $0.09$ 15) $0.07$ 16) $0.06$ 17) $0.08$ 18) $0.07$
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directions: label the quotations below with the correct literary device…
15. The metaphor in quote 13 ("the solid unmoving cattle of the majority") means the unthinking, passive majority are like docile cattle—they do not resist or question threats to …
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at a factory workers are draining a large vat containing water. the wat…
(a) - Selected statement: As time increases, the amount of water in the vat decreases. - Rate: 18 liters per minute (b) 860 liters
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answer the questions below. (a) a used car dealer is examining how the …
(a) car's mileage (b) L (c) pay at the end of the week
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jane is adding water to a swimming pool at a constant rate. the table b…
(a) As time increases, the amount of water in the pool increases. At what rate is the amount of water in the pool increasing? 8 gallons per minute (b) 70 gallons
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question the weight, in pounds, of a newborn baby ( t ) months after bi…
The $y$-intercept of the equation $W = 2t+11$ is 11. In the context of the problem, it means that the weight of the newborn baby at birth (when $t = 0$ months, i.e., at the time o…
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(a) your answer is incorrect. miguel is printing extra flyers to distri…
(a) 62 flyers (b) As time increases, the number of flyers Miguel has increases. At what rate is the number of flyers Miguel has increasing? 3 flyers per minute
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find the percent. 16 out of 40
40%
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from last year show that the store sold or every 2 bottles of shampoo. …
\(144\)
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this question has two parts. first, answer part a. then, answer part b.…
A. The job market respects university degrees. ### Part B
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which sentence from the passage best states the author’s main claim? \m…
C. "Unfortunately, MOOCs have fallen far short of their original promises to change education for a few astoundingly simple reasons." (paragraph 2)
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arrange the pieces below to emphasize who/what did the action. do not c…
I play kickball on Marlin's state-of-the-art field.
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4 tokala swims \\(\\frac{2}{3}\\) mile on monday, \\(\\frac{3}{4}\\) mi…
The total distance Tokala swims on those three days is $\boldsymbol{2\frac{1}{4}}$ miles (or $\boldsymbol{\frac{9}{4}}$ miles).
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arrange the pieces to emphasize whom/what the action was done to. do no…
Patrick Star's portrait will be drawn by me with colored pencils.
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part a the author uses the phrase \synchronous online chats\ in paragra…
C. at the same time ### Part B
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arrange the pieces to emphasize whom/what the action was done to. do no…
One of Eugene Krabs's sneakers is hidden by me every morning before swim practice.
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20. which two quantities form a proportional relationship? a $\frac{1}{…
D. $\frac{10}{18}$ and $\frac{45}{81}$
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17. apply math models the winning team in a 400-meter relay race had a …
The split time is 49.652 seconds. --- ### Problem 18
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11. marco puts his coins into stacks. each stack has 10 coins. - he mak…
$\$57.50$
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a gallon of gas costs $5.72, including tax. dong put 8 gallons of gas i…
\(\$1.76\)
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part a in paragraph 3, the words consistently, constant, and regular ar…
D. happening often ### Part B
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then transition into just writing inequalities (skip part b,c) → go ove…
--- ### First Scenario a. System of inequalities: $$ \begin{cases} x + y \leq 800 \\ 6x + 9y \geq 5000 \\ x \geq 0 \\ y \geq 0 \end{cases} $$ b. Yes, it is possible. The club need…
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kiara went on 6 hikes. the hikes were: 3.8 miles 4.3 miles 2.2 miles 5.…
\( 1.4 \)
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name: trinity homophones homophones are words that sound alike, but hav…
1. hare 2. It's 3. Who's 4. their 5. hole 6. by 7. to 8. won 9. wear 10. Your
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how did harold lasswell define politics in his 1936 book? ○ the art of …
○ The balance between the haves and have nots
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tina checked the available memory on 7 computers in the computer lab. t…
\(1.3\)
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tina checked the available memory on 7 computers in the computer lab. t…
\(1.3\)
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which table shows a proportional relationship between the time spent re…
The bottom-right table (with time values 10, 20, 30 min and page values 5, 10, 15 pages) shows a proportional relationship. --- ### For Question 5:
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scarlett went camping with the school outing club. they roasted marshma…
22.0
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jenny calculated the distances between 5 pairs of stars in an observato…
26.9
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maria checked the hit counters of 6 websites to track how many people v…
\(1.7\)
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bryce volunteered to stamp hands at the entrance of a museum 7 times th…
2.6
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question ryan is a salesperson who sells computers at an electronics st…
The $y$-intercept of the function is 65, which represents Ryan's base pay (the amount he earns when he sells 0 computers in a day).