統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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an animal researcher randomly selected 98 dogs and cats and recorded if…
\(\frac{23}{38}\)
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a researcher randomly asked 284 people how they prefer their eggs cooke…
\(\frac{41}{91}\)
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a researcher randomly surveyed 122 college professors to determine what…
\(\frac{16}{33}\)
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a researcher randomly selects 95 high school swimmers and asks them whi…
\(P(F|B) = 0.51\); given that the student prefers brand B, there is a \(0.51\) probability that their strongest stroke is freestyle.
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students majoring in psychology surveyed 200 of their fellow students a…
\(0.13\) (the third option)
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executives for a company that prints logos on products are expanding th…
\(0.01\)
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according to sales records at a local coffee shop, 75% of all customers…
0.17
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according to sales records at a local coffee shop, 75% of all customers…
\(0.08\) (Option 1)
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in a survey given by camp counselors, campers were asked if they like t…
0.93
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according to sales records at a local coffee shop, 75% of all customers…
\(0.83\)
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you draw a marble from a bag that has 4 red, 2 blue, and 3 green marble…
A. \(\frac{1}{9}\)
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three siblings, peyton, cameron, and dakota, all ask their parents to b…
Peyton: \(\frac{1}{3}\), Cameron: \(\frac{1}{3}\), Dakota: \(\frac{1}{3}\) (the second option in the given choices)
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\so then, who trained you? somebody had to train you to be so fast.\ ob…
- Narrative Perspective: First - person. - How do you know?: Use of "I" (first - person pronouns). - Methods of Characterization: Dialogue, self - description. - What do you learn…
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ten people (labeled 1-10) have purchased raffle tickets for a fundraise…
The second option (with values \(0.01,0.01,0.05,0.07,0.68,0.01,0.05,0.03,0.01,0.08\)) could be the probability distribution (assuming the non - uniform nature as per the problem s…
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49. find the probability of spinning a 1 and an a: p(1 and a).
B. \(\frac{1}{16}\)
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close read: analyze the text identify the choice that best answers the …
C. the addition of a number of descriptive words to "ominous bird of yore" in the fifth line, suggesting a growing frenzy
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what does it mean if an equation has one solution? a. no value of x sat…
B. Exactly one value of \(x\) satisfies the equation.
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48. a box contains spheres and cubes as shown below. which statement is…
C. The probability of choosing randomly a black sphere is \(1/4\).
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a deli owner made a probability distribution chart for the meat choices…
\(0.09\)
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47. victor has recorded the height of his 9 - year - old daughter maya …
160 cm
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some college advisors noticed the following breakdown of majors for the…
The second table (with Business \(0.48\), Criminal Justice \(0.11\), Math \(0.03\), Nursing \(0.22\), Psychology \(0.16\)) is the correct probability distribution.
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a total of 50 people attended a conference and were offered a choice of…
\(0.18\) or \(\frac{9}{50}\)
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a group of ticket takers at a box office for a new theater noticed that…
The second option (Action: 0.23, Comedy: 0.39, Drama: 0.28, Horror: 0.10) is correct.
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a group of marketing researchers for a popular cell phone manufacturer …
The probability distribution is \(P(X < 1)=0.77\), \(P(1\leq X<2) = 0.20\), \(P(2\leq X<3)=0.02\), \(P(X\geq3)=0.01\) which corresponds to the last option (the one with \(0.77\), …
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11 mark for review a total of 50 people attended a conference and were …
\(\frac{9}{50}\)
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about 20% of the population experiences \cybersickness.\ this happens w…
\(4\)
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three parties, l, c, and k, are running for the election in a town of 8…
D. 5,280 people are expected to vote the L party or the K party.
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a local restaurant is having a contest in which patrons spin a wheel to…
15
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first read: comprehension identify the choice that best answers the que…
C. the mirror in a horror movie, into which people disappear
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three parties, l, c, and k, are running for the election in a town of 8…
D. 5,280 people are expected to vote the L party or the K party.
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44. a group of students has taken a test. the lowest score was 13, the …
The range is 79.
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the table shows the number of dogs walked by a dog walker each week for…
B. 15
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43. in a company, 75% of the wages are higher than $1,876.40. which sta…
B. The first quartile is $1,876.40$.
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the scatterplot shows the relationship between two variables, x and y. …
A. \(y=-0.3x^{2}+1.7x + 7.1\)
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a manufacturer of baseball hats claims that approximately 30% of people…
The first option \(NNNNN\ HHN NN\ NNNHN\ NHNHN\)
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your turn (show all your work) jason jumped off of a cliff into the oce…
- Y - intercept: \((0,480)\). It means Jason's initial height (at the moment he jumps, \(x = 0\) seconds) is \(480\) feet. - Vertex: \((0.5,484)\) - Explanation of vertex: At \(x …
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18. you have five employees. they work the following number of hours we…
B. 39
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the graph shows the distance a ball has traveled x seconds after it was…
The average speed between \(2\) seconds and \(8\) seconds is \(0.5\) meters per second.
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4. what does the quote \men would say of him that up he went and down h…
C. When someone gains true knowledge, it is likely that others who have not experienced truth will doubt that person's ideas.
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socrates believes that... a the sun in the story is the idea of good, w…
A. the sun in the story is the idea of good, which is the ultimate truth that all people ought to seek.
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8. find the weighted average. weighted average:________________________
\(4.75\)
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4. read the following from line 6. \and quench its speed in the slushy …
extinguish
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mel slides down waterslide a, and victor slides down waterslide b. afte…
Mel was descending at a faster rate. Mel's rate of change is \(-5\), meaning her height in the air decreases \(5\) feet every second. Victor's rate of change is \(-\frac{10}{3}\ap…
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the graph shows the average low temperature for charlotte (solid) and a…
Asheville's lowest average temperature in January is about \(25\) degrees, which is less than Charlotte's \(32\) degrees.
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20. ceteris paribus means all else equal meaning everything stays the s…
True
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what is meant by the term total installment price? a. cost of the produ…
B. total amount you end up paying
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v.1.2 coincidence question: using these word parts, what does coinciden…
A. Two events that happen together
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which excerpt from \lather and nothing else.\ is the best example of fa…
The lather was drying on his face. I must hurry. Through the mirror, I took a look at the street.
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the passage below is from the declaration of independence. we hold thes…
A. obvious to all
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what was the meaning of unalienable rights in the declaration of indepe…
C. rights that all people are entitled to and that should not be taken away
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pete is conducting a survey to determine his customers overall satisfac…
The population Pete is trying to analyze is all his customers. His results are not likely to be representative of the population. This is because he is only surveying the 5 custom…
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buck is a cowboy. he lives on a ranch in montana with his horse buckaro…
1. False 2. True 3. True 4. False 5. False
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analyzing a histogram the ages of the people who came to a birthday par…
- The data is skewed right. - There were 31 people at the party. - The majority of the people at the party were less than 61 years old.
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interpreting data represented in a dot plot the number of questions tha…
The most frequent number of questions answered incorrectly was \(5\). The data distribution is skewed left.
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analyzing a box plot the average age of the children at a campout is sh…
Half of the children were between 9 and 11 years old.
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survey of 9th and 10th graders with siblings which statements are corre…
- More 9th graders were polled than 10th graders. - There is a greater percentage of 10th graders who do not have a sibling than 9th graders who do not have a sibling. - The total…
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1. what is the first step when using desmos to find the slope and/or y …
Create a Table
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analyzing a histogram anja collected data about the number of dogs 9th …
She is correct, the histogram is skewed to the right because there is less data on the right side.
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a math teacher wants to find out the average number of hours his studen…
30 students selected from his class rosters.
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distinguishing between quantitative and qualitative data which surveys …
- the eye color of students involved in after - school activities - the characteristics of different types of birds
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1. how did the intolerable acts make american colonists feel? direction…
The Intolerable Acts made American colonists feel like they were being treated as inferior and made them feel ready to be independent.
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1. how did the mongol empires social structure under kublai khan reflec…
B) Hierarchical four - class system privileging Mongols
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(extra credit) which of the following sets of words have a different co…
easygoing/lazy
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the words \movie\ and \film\ have the same * claim connotative meaning …
- First question: denotative meaning - Second question: easygoing/lazy
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sentence #1: horror movies are dangerous for society because they dwell…
claim
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sentence #1: halloween should be considered the first slasher movie bec…
counterclaim
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the words determined andstubborn have a different * claim connotative m…
connotative meaning
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the explicit or direct meaning or set of meanings of a word * claim con…
denotative
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the explicit or direct meaning or set of meanings of a word * claim con…
- For "the explicit or direct meaning or set of meanings of a word": denotative - For "a claim made to rebut or dispute a previous claim": counterclaim
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kamilah picks a total of 16 radishes and carrots in the community garde…
Carrots: 4, Radishes: 12. In the diagram, 4 rows for carrots and 12 rows for radishes.
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the feeling or tone associated with a words meaning * claim connotative…
connotative
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the graph is a piecewise function that shows kierans journey from when …
\(2\)
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12. in paragraph 6, the author states, \one of germanys fiscal policies…
B. It means that the government sets rules for how and when taxes are collected.
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sammy didnt look away from his smartphone to reply to his mothers reque…
C. "Without saying a word, he climbed back into the food truck."
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18. use the following to answer question 18 ever before has the south s…
18. C. It increased the demand for enslaved workers to grow more cotton 19. A. Increase in factory production and profits 20. C. Southerners defended slavery by criticizing Northe…
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select the correct description of this skewed distribution curve. a.) l…
A. Left - skewed: the median lies to the right of the mean
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according to this bar graph, what is the mode?
The mode is grade B.
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the median weight of newborns in a town is 3.47 kg. the first and the t…
Approximately 50% of newborns weigh more than \(3.47\) kg.
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41. maurice works in the sales department of techieland, a store that s…
D. \(y=-1.99x + 349\)
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40. the scatter plot shows the grades of an exam (y) of a group of 14 s…
D. \(y=-0.85x + 0.66\)
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39. the graph shows the total number of comic books in brandons collect…
C. The rate of change is 3 new comic books every month.
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amy and daniel compared the balances of their saving accounts each mont…
D. During the first half of the year, Daniel's account balance grew three times as fast as Amy's balance.
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given the venn diagram: which statement is valid? a all student backpac…
C. Some student backpacks have both a chromebook and a textbook.
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food selections pizza taco 65 corn dog a total of 320 teenagers selecte…
D. 75
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the manager of starbucks made a venn diagram to represent customers who…
B.
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on a recent survey, students were asked if their favorite color is blue…
C. \(7\)
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the venn diagram below shows the set of numbers (3, 6, 7, 8, 12, 16, 19…
C. \(\{3,7,12,15,24,27\}\)
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the dot plot represents the amount of rain recorded by rain gauges in d…
16
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a relative frequency table is made from data in a frequency table what …
$63\%$
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5. which principle means everyone must obey the law? • a. federalism • …
5. B. Rule of Law 6. A. Protect individuals from unfair government actions 7. C. 14th 8. A. To prevent any branch from becoming too powerful 9. A. Shared power between national an…
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10. the fluctuation of water depth at a pier is shown in the figure bel…
G. 6
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5. a wallet containing 5 five - dollar bills, 7 ten - dollar bills, and…
D. \(\frac{2}{5}\)
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what does separation of powers mean? its the practice of merging all go…
It's the division of government into three branches - legislative, executive, and judicial - each with its own responsibilities and powers.
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1. marcuss favorite casserole recipe requires 3 eggs and makes 6 servin…
J. \(-60\)
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a survey asked people how many times they visited the mall last month. …
14
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what is one of the main reasons that congress should want to keep socia…
Older Americans tend to vote, and will show their support for social security by voting for Congressional candidates who support it.
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the customers at a cookie store ate different numbers of cookies. eatin…
10
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a librarian kept track of how many times some people went to the librar…
22
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at the beach, some people looked for shells. finding seashells how many…
\(24\)
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at the beach, some people looked for shells. finding seashells how many…
25