統計と確率
データ分析、確率分布、仮説検定、統計手法。
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which of the following is not a socioeconomic factor? options: income d…
C. Free - market economies
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what time does the clock show?
6:00
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8. taking a poll to be sure that a poll is accurate and representative …
- First, the following have to be done: - Define the **population** to be polled - Construct a **random** sample - chosen by chance - representative number from subgroups - Prepar…
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jose has $1\\frac{1}{2}$ cups of yogurt to make smoothies. each smoothi…
6
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2. a team of scientists began studying the population of white - tailed…
The two equations are \( 31 = ab^{2} \) and \( 136 = ab^{15} \). ### Part (A)(ii)
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tell whether x and y show direct variation. explain your reasoning. if …
- **Problem 6**: \( x \) and \( y \) show direct variation. The constant of variation \( k = 2 \) (since \( \frac{y}{x}=2 \) for all \( x \) values). - **Problem 7**: \( x \) and …
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8. taking a poll • to be sure that a poll is accurate and representativ…
The subfield is Statistics (under Mathematics). The key steps for a valid poll: Define the population to be polled; Construct a random sample (chosen by chance, representative fro…
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during the cold war, the united states and the soviet union implicitly …
A. mutual assured
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did you know? one of orwell’s concerns about the soviet state was that …
Literature (under Arts)
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11. use the table to write a proportion. (section 5.3) 12. | | monday |…
\(h = 8\) ### Question 13:
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tell whether the two rates form a proportion. (section 5.2) 8. 75 miles…
No ### Problem 9:
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compare the fraction models below using <, >, or =
For the circle models: $\frac{3}{4}<\frac{5}{6}$; For the rectangle models: $\frac{4}{5}>\frac{3}{4}$
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ms. barnsley separates her class into two groups. she gives each studen…
The median of Group A is greater than the median of Group B.
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a line of best fit is drawn for the set of points shown on the graph. d…
(30, 38)
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cost $0tell whether the ratios form a proportion. (section 5.2)5. \\(\\…
Yes ### Problem 6: $\boldsymbol{\frac{2}{3}, \frac{10}{30}}$
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compare the fraction pairs below using <, >, or =.. \\(\\frac{2}{5}\\) …
$\frac{2}{5} = \frac{4}{10}$ ### Second Fraction Pair ($\frac{6}{9}$ and $\frac{7}{12}$)
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the graph shows a distribution of data with a standard deviation of 6. …
It is within 2 standard deviations of the mean.
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question 9 not yet answered marked out of 1.0 flag question write 0.42 …
$\frac{21}{50}$
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question 8 not yet answered arked out of 0 flag uestion write 0.28 as a…
a. $\frac{7}{25}$
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write 0.260 as a fraction in simplest form. select one: a. \\(\\frac{11…
c. $\frac{13}{50}$
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question 5 not yet answered marked out of 1.0 flag question write 0.180…
d. $\frac{9}{50}$
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question 3 not yet answered marked out of 1.0 p flag question write \\(…
d. 0.12
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question 2 not yet answered marked out of 1.0 flag question write 0.4 a…
$\frac{2}{5}$
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write and solve an equation to answer the question. 10. 20% of 150 is w…
The number is 30. ### Problem 11:
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question 1 not yet answered marked out of 1.0 flag question write 0.35 …
a. $\frac{7}{20}$
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write and solve a proportion to answer the question. 11. what percent o…
11. \( 48\% \) 12. \( 25\% \) 13. \( 36 \) 14. \( 4000 \) 15. \( \frac{496}{3}\approx165.33 \) 16. \( 90 \) 17. \( 0.16 \) 18. \( 160\% \)
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part b which of the following details best supports the central or main…
A. "...she had always been an outspoken child; family members said she took after her uncle Vernon..."
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part a which of the following best represents the central or main idea …
A. Barbara Johns was meant to stand up and fight injustice.
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question 7 not yet answered marked out of 1.0 flag question write 0.878…
d. \(\frac{29}{33}\)
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question 5 not yet answered marked out of 1.0 flag question write \\(\\…
a. 7.25; terminating
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question 3 not yet answered marked out of 1.0 flag question write \\(\\…
c. 1.86
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question 2 not yet answered marked out of 1.0 p flag question write the…
\(0.\overline{629}\)
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hobby store is having a promotion on picture frames: buy 3 get the 4th …
One way: $3f + 0.25f$ (or $3f + f(1 - 0.75)$) Another way: $4f - 0.75f$
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inquiry loop 2 independent reading: the nickel boys, chapter 15, p. 188…
To solve this, follow these steps: 1. **Identify Figurative Language**: Reread pp. 188–190 of *The Nickel Boys* Chapter 15. Look for metaphors (e.g., “trauma as a weight”), simile…
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question 1 not yet answered marked out of 10 write the repeating decima…
\(\frac{14}{99}\)
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the man found a wallet on the ground and had the integrity to turn it i…
B. honesty; moral soundness (assuming the second option is labeled B; if no label, "the second option: honesty; moral soundness")
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16/17 the kids will fortify their snow fort with wood planks. fortify m…
to make stronger
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the root \teg\ means... to strengthen, to give strength whole, unbroken…
A. to strengthen, to give strength
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as the king became more and more infirm, his ability to make wise decis…
C. not in good health; not well (assuming the options are labeled A, B, C, D with A being "very helpful or useful", B being "not requiring much work", C being "not in good health;…
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13/17 the root \fort\ means... to be strong; to be worth strong whole, …
B. strong (assuming the options are labeled A, B, C, D with A: to be strong; to be worth, B: strong, C: whole, unbroken, D: to strengthen, to give strength)
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reading can be an invaluable pastime, opening doors and opportunities t…
B. very helpful or useful (assuming the second option is labeled B; if no labels, it's "the second option: very helpful or useful")
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independent reading: the nickel boys, chapter 15, p. 187 (\years of hab…
Arts - Literature
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11/17 the root \firm\ means... to strengthen, to give strength whole, u…
The option "strong" (the third option in the list).
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the identity of the hero could not be confirmed because they were weari…
B. to settle as true (assuming the options are labeled A, B, C, D with A: to fall apart, B: to settle as true, C: to bring together; to work something into, D: to make stronger)
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8/17 spending a month in the wilderness requires a fortitude that many …
B. strength of mind or character (assuming the options are labeled A, B, C, D with A as first, B as second, etc.)
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question 5 of 5 in \exhalation,\ why had no other anatomist tried a bra…
A. Because brain dissection meant certain death for the specimen
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the roots \val, valid\ mean... to strengthen, to give strength strong w…
D. to be strong; to be worth (assuming the options are labeled A - D with A: to strengthen, to give strength; B: strong; C: whole, unbroken; D: to be strong; to be worth)
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4/17 each day, the students evaluate their options in the cafeteria bef…
C. to judge; to size up (assuming the options are labeled A, B, C, D with C being "to judge; to size up")
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compare the student text with the source. source: jim murphy, truce: th…
No, it is not plagiarized.
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use a t - test to test the claim about the population mean \\(\\mu\\) a…
\(0.001\)
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question 6 the article states: it means that people must give the gover…
B. to not pay attention to
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a concert venue sold 100 tickets on the first day. each subsequent day,…
c. 25
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the sequence 20, 16, 12, ... is an example of what type of sequence? a.…
d. Arithmetic
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19. completions a quarterback completed 68% of his passes in a game. he…
17
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a store offers a $10 discount on a product each week. if the original p…
c. $50
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what is the equation of the trend line in the scatter plot? use the two…
\(y=\frac{7}{5}x - 56\)
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18. scavenger hunt the table shows the results of 8 teams competing in …
The number is 21. ### Problem 16: 42 is 21% of what number?
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write and solve a proportion to answer the question. (section 6.3) 11. …
40% ### Question 12: 35 is what percent of 25?
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question 25 of 30 a relationship between two variables is called: a. ca…
D. correlation.
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question 18 of 30 which is an example of semantic memory? a. rememberin…
D. Remembering something that has meaning for you
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4. 69.91 + 30.10 + 87.73 | 2.45
185.29 (Note: If the last number was a typo or different operation, the answer may vary. But based on common arithmetic with the given numbers, this is the result of adding the fi…
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to be in the... | you must be... canoe club | between 8 and 15 years ol…
s: - Soccer Team: \( \boldsymbol{a < 12} \) - Coding Club: \( \boldsymbol{a \geq 10} \) (or \( a > 10 \) or \( a = 10 \) combined)
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use what is given to complete all of the sections an graphs are labeled…
x = number of t-shirts sold y = total donation (in dollars)
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write the percent as a decimal. (section 6.1) 1. 34% 2. 0.12% 3. 62.5% …
1. \( 0.34 \) 2. \( 0.0012 \) 3. \( 0.625 \) 4. \( 67\% \) 5. \( 535\% \) 6. \( 68.5\% \)
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1. billy is a bodybuilder and is trying to gain weight. in order to gai…
1,050 calories (the option with "1,050 calories")
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5. michael took his son joey to get cinnamon rolls for breakfast. each …
142 calories (corresponding to the first option: 142 calories)
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use the empirical rule to find a reasonable estimate for p(z ≤ 0.82). 1…
80%
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instructions read the question carefully and select the best answer. th…
D. supporting the poem’s central themes of time and eternity
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4. for the three - part question that follows, provide your answer to e…
# Part A Explanation: ## Step1: Define variables Let \( x \) be the calories in 1 sandwich. ## Step2: Set up proportion Since the number of calories is proportional to the number …
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at joy’s toy store, their most popular toy sold is a scooter. last summ…
The percent change is a 4% decrease (or -4%).
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3. there are 93 calories in 3 cups of popcorn. how many calories are in…
139.5 calories (corresponding to the first option: 139.5 calories)
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1. philip gets a plain hot dog at the concession stand at the baseball …
544 calories (the option with "544 calories")
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12. a medium - sized apple has 95 calories. if you purchased 4 apples, …
B. 380 calories (assuming the options are labeled with letters, if not, the correct option is "380 calories")
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10. one serving of 5 crackers has 80 calories. the whole package has 12…
960 calories (the option with "960 calories")
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at the beginning of the month, edwards used car dealership had 80 cars …
72
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at the beginning of the month, edwards used car dealership had 80 cars …
99 (If original is 100, 1% decrease: 100 - 1 = 99) or if original is 80, 80 - 0.8 = 79.2 (but cars are whole numbers, so maybe 100 is correct). Wait, the image has "100" below the…
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instructions read the questions carefully and select the best answer. w…
B. a major education concerned with human culture
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the price of a bowl of plain phò is $6. with 4 ingredients added, the t…
B. price of each ingredient
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use the graph to complete the following. the probability that a boxer w…
16
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last month, harvey had 75 dollars in a checking account. since then, hi…
The current balance of Harvey's account is $51$ dollars.
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use the graph to complete the following. the probability that a boxer w…
95
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using the graph as a reference, select all statements that are true abo…
- Normal distributions are symmetrical about the mean, \(\mu\). - The probability that an event is within 1 standard deviation above the mean is 34%.
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which statement must be true? each distribution has a different mean an…
Each distribution has the same mean and a different standard deviation.
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what is the mean of the normal distribution shown below? image of a nor…
4
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the class scores of a history test have a normal distribution with a me…
\(z=\frac{72 - 79}{7}\) (the first option)
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the approach that would believe that the person is the best one to deci…
humanistic latent
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the average miles per gallon of a particular automobile model are appro…
68%
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the weights of 2-pound bags of best dog food are approximately normally…
99.7% (corresponding to the option with 99.7%, likely the last option in the given choices)
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the lengths of a lawn mower part are approximately normally distributed…
68% (the option corresponding to 68%)
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what is the difference of the means of the distributions? 15 30 45 60
15
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the annual salaries of all employees at a financial company are normall…
5 (corresponding to the option "5")
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what is the mean of the normal distribution shown below? -3 -2 -1 0 1 2…
0 (corresponding to the option "0")
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a group of third grade students is taught using a new curriculum. a con…
\(-4.239\)
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the ratio of student athletes to non - student athletes employed at a c…
189
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stanley runs 6 miles in 44 minutes. at the same rate, how many minutes …
66
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a group of third grade students is taught using a new curriculum. a con…
\(-4.447\)
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reasoning the equation below describes a proportional relationship betw…
7.81
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a group of third grade students is taught using a new curriculum. a con…
D. \(t < - t_0\)
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a group of third grade students is taught using a new curriculum. a con…
The critical value is \(-1.302\)
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a group of third grade students is taught using a new curriculum. a con…
The alternative hypothesis, \(H_a\)