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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a boat capsized and sank in a lake. based on an assumption of a mean we…
$1.0000$
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an elevator has a placard stating that the maximum capacity is 4000 lb—…
a. 0.9382 b. 1 c. The elevator is likely to be over - loaded when carrying 27 adult male passengers, so it is not very safe under these assumptions.
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an elevator has a placard stating that the maximum capacity is 4000 lb …
a. $0.9772$ b. $1$ c. The elevator is not safe for 27 adult male passengers on average.
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when a descriptive word, phrase, or clause is essential to the meaning …
D. restrictive
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assume that the amounts of weight that male college students gain durin…
$0.6957$
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read these lines from walt whitmans \song of myself.\ do i contradict m…
He is suggesting that a human being has different aspects.
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assume that the amounts of weight that male college students gain durin…
$0.2087$
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in because i could not stop for death, what is the significance of the …
The phrase characterizes Death as being removed from human concerns.
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assume that females have pulse rates that are normally distributed with…
c. C. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size a. 0.6255 b. 0.7389
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assume that females have pulse rates that are normally distributed with…
$0.7389$
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annual incomes of statistics students are known to have a distribution …
D. No, the sample means will be normally distributed, but the sample of incomes will be skewed to the right.
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two hundred fifty - five california faculty members were surveyed regar…
1. 68 2. 174 3. 15 4. 93 5. 33 6. 130 7. 162
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the lengths of pregnancies are normally distributed with a mean of 267 …
a. B. The result suggests that either a very rare event occurred or the husband is not the father. b. 236
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the lengths of pregnancies are normally distributed with a mean of 267 …
0.1922
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a common design requirement is that an environment must fit the range o…
B. The table will fit almost everyone except about 6% of men with the largest sitting knee heights.
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a common design requirement is that an environment must fit the range o…
99.99%
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a common design requirement is that an environment must fit the range o…
1. 23.4 in 2. C. The statement is true because the 95th percentile for men is greater than the 5th percentile for women 3. 94.30%
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a survey found that womens heights are normally distributed with mean 6…
The new height requirements are a minimum of 62.9 in and a maximum of 68.7 in.
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a survey found that womens heights are normally distributed with mean 6…
The new height requirements are a minimum of 65.1 in and a maximum of 68.7 in.
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a survey found that womens heights are normally distributed with mean 6…
Since most men do not meet the height requirement, it is likely that most of the characters are women.
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a survey found that womens heights are normally distributed with mean 6…
$9.01$
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a survey found that womens heights are normally distributed with mean 6…
a. B. No, because only a small percentage of women are not allowed to join this branch of the military because of their height. b. 58.4 in, 68.5 in
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a survey found that womens heights are normally distributed with mean 6…
B. No, because only a small percentage of women are not allowed to join this branch of the military because of their height.
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a survey found that womens heights are normally distributed with mean 6…
\(99.41\)
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suppose that the heart beat per minute (bpm) of adult males has a norma…
A heart rate with 90 bpm is not significantly high because it is within the range of values that are not considered significant.
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assume that adults have iq scores that are normally distributed with a …
$0.0401$
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find the indicated iq score. the graph to the right depicts iq scores o…
119
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find the indicated iq score. the graph to the right depicts iq scores o…
114
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find the area of the shaded region. the graph to the right depicts iq s…
$0.3775$
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find the area of the shaded region. the graph to the right depicts iq s…
0.2514 (assuming the boundary value \(x = 110\). If a different boundary value is given, the steps are the same but the z - score calculation will change accordingly)
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why would workers fighting the closure of a manufacturing plant be an e…
Workers' desire for jobs is evidence that they are active in the economy.
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which line best fits the data shown in the scatter plot?
C.
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graces math teacher finds that theres roughly a linear relationship bet…
The number of hours a student should spend on their homework to expect a score of 75 on the quiz.
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sleep showdown: data + art challenge name: _ date: _ 10/1/25 step 1: pl…
1. 8th - graders have more consistent sleep, as indicated by a smaller IQR. 2. 9th - graders have the widest variety of sleep hours, as indicated by a larger range. 3. There are n…
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find the indicated z - score. the graph depicts the standard normal dis…
1.18
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find the indicated z - score. the graph depicts the standard normal dis…
1.02
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find the indicated z - score. the graph depicts the standard normal dis…
\(1.39\)
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find the indicated z - score. the graph depicts the standard normal dis…
- 0.71
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theres a roughly linear relationship between the length of someones fem…
The change in expected height for every one additional centimeter of femur length.
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chee is ordering a taxi from an online taxi service. she has to pay a f…
The total charge for 1 mile.
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starting at noon, suav observed the amount of snow on his lawn during a…
The amount of snow on the lawn at 12:01 p.m.
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zendayas math teacher finds that theres roughly a linear relationship b…
The number of hours a student should spend on their homework to expect a score of 100 on the quiz.
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“meeting the spending targets in this budget meant some very difficult …
deciding what would be funded and what would be cut
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many bank accounts never go below zero. but some banks will allow a neg…
$-35.57$
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read the excerpt from the metamorphoses by ovid. the goddess was moved,…
In Baldwin’s adaptation, Pyrrha figures out the meaning of the instructions, while in Ovid’s original, Deucalion interprets the correct meaning.
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the line plot shows the lengths of 15 fish. each x represents 1 fish. w…
B. $\frac{5}{8}$ inch (There is a calculation error above, the correct calculation is $7\frac{7}{8}-7\frac{1}{8}=\frac{63}{8}-\frac{57}{8}=\frac{6}{8}=\frac{3}{4}$ inches, but amo…
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the line plot shows the amount of flour needed to complete 10 different…
A. $14\frac{1}{2}$ cups
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el costo de un viaje en taxi es de $10 por la primera milla o parte de …
B. {10, 13, 16, 19, 22, 25}
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example 6: using quadratic regression. the table shows fuel efficiencie…
\(y = ax^{2}+bx + c\) (where \(a\), \(b\), and \(c\) are obtained from the quadratic - regression calculation on the calculator, for example, if \(a=-0.013\), \(b = 1.27\), \(c=-1…
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which line plot should meg and sten use to show the weight of dirt in t…
The first line - plot (left - most one) is correct as it has 1 'x' above $3\frac{1}{2}$, 2 'x's above 4, 3 'x's above $5\frac{1}{2}$ and 2 'x's above 6.
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2 más oraciones use pronouns to rewrite the sentences without changing …
1. Estamos preparándosela. 2. Voy a repetírtelo. 3. Estás preparándomelo? 4. Debemos pedírselos. 5. Tienes que mostrarlosme.
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mateo is designing a technical diagram that many textbook publishers ca…
- Question 23: As soon as the image exists in physical form - Question 24: True - Question 25: True
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part 2 of 2 why can you not say that two vertical lines have equal slop…
Why can you not say that two vertical lines have equal slope? A. Vertical lines have undefined slope, and an undefined object has no value. Two undefined quantities cannot be equa…
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modeling real life the linear function m = 10 - 1.44p represents the am…
a. The constant 10 is the initial money amount. The coefficient - 1.44 means cost per photograph is $1.44. b. 0, 1, 2, 3, 4, 5, 6; Discrete; Because the number of photographs p is…
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which federal agency calculates the consumer price index (cpi)? us cens…
B. US Bureau of Labor Statistics
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when i got off from work that evening of december 1, i went to court sq…
1. First - person point of view 2. Use of "I" and personal experiences 3. Allows access to narrator's thoughts and feelings, creates intimacy
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how do central banks govern the banking industry? check all that apply.…
by deciding how much banks must keep in reserve by overseeing the nation's payment system by responding quickly to banking crises that occur by auditing banks based on current reg…
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the line plot shows the amount of time noah spends practicing the piano…
C. $\frac{13}{4}$ hours
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a company is selling bubble gum. the function g(x)=3x + 4 tells the com…
$g(8)=28$. This means that 8 packages of gum costs $28$.
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the following is a draft of a student essay. it may contain errors. pre…
B. Whether through work or volunteer experience, veterinary schools require applicants to prove they have experience at veterinary practices, farms, ranches, animal shelters, zoos…
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pasar in english means... to explain to pass to present
B. To pass
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choose the correct answer. entrevistar in english means... to interview…
To interview
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en taxi son menos de seis millas. el costo se modela mediante la funció…
# Explicación: ## Paso 1: Comprender la función La función $P(C)=0.60C$ es una función lineal donde $C$ representa el costo. El dominio de una función es el conjunto de todos los …
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5) use context clues to determine the meaning of the word socioeconomic…
Socioeconomic refers to the combined social and economic factors affecting individuals or groups. Helpful words/phrases could include those related to social status, income, educa…
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the data in the graph show the average weight for girls based on age. (…
A slope of 7.5 means that the weight of girls tends to increase at a rate of 7.5 lb per year during the period of growth.
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5. the united states ran a trade deficit of $540 billion in 2012. this …
The U.S. was a net borrower from the rest of the world
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2. in terms of global trade, services currently: represent less trade t…
A. Represent less trade than goods
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try again! answer two in a row correctly to continue. rearrange the sen…
All American students in middle and high school should be required to learn Spanish.
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10/2 vocabulary final exam. what does the term \pertinent\ mean? releva…
relevant; dealing with the current topic
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what is the meaning of the word \eradicate\? current; modern friendly t…
C. to exterminate; to get rid of
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jarod has a bag of 20 marbles containing 12 red, 6 green, and 2 blue ma…
C. $\frac{33}{95}$
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a fair die is rolled once. what is the sample space for the event of ro…
A. {2, 4, 6}
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a fair die is rolled once. what is the sample space for the event of ro…
A. $\{2,4,6\}$
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rearrange the sentence below to remove any wordy sections. do not chang…
The benefits of open campus lunch policies outweigh the risks.
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rearrange the sentence below to remove any wordy sections. do not chang…
English teachers need to integrate modern communication styles like Tweeting and texting into their classes.
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let a be the event that a 6 - sided die lands on a number less than 5. …
B. 4 E. 2
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rearrange the sentence below to remove any wordy sections. do not chang…
Bing Bong is the most sympathetic character in the film "Inside Out".
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rearrange the sentence below to remove any wordy sections. do not chang…
High - school athletes should not be allowed to commit to colleges until their senior year.
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rearrange the sentence below to remove any wordy sections. do not chang…
College athletes should receive salaries because of the physical and academic risks they take.
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what constitutional amendment guarantees equal protection and due proce…
1. d. 14th Amendment 2. c. The Preamble 3. b. That the law or action violates the Constitution.
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a survey company was trying to see if people in a state thought the pol…
Percentage of all people in the state who thought the pollution was too high.
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a restaurant chain wanted to find out how the customer experience was i…
The percentage of customers surveyed that reported a positive experience.
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find the median and mode for the data below. 10, 15, 10, 20, 5, 25. the…
The median is 12.5 A. There is one mode and it is 10
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the entire group of individuals about whom we hope to gain information …
Population
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the entire set of items from which data can be selected? sample populat…
Population
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a representative set of a population, to gain information from a large …
Sample
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a radio station in raleigh, nc wants to know the most popular song of t…
listeners of this radio station
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a beverage company wanted to see if people in the united states liked t…
Every person in the United States.
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a gaming website wanted to find out which console its visitors owned. w…
All of the website visitors.
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a school principal wants to see which subject the 845 students surveyed…
700 of the 845 students prefer math.
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about 74% of the residents in a town say that they are making an effort…
D. The probability that more than 79% of a sample of 100 residents are making an effort to conserve water or electricity is about 12.71%.
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a musician wanted to see what people who bought his last album thought …
The percentage of all people who bought his last album that thought the songs were good.
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about 74% of the residents in a town say that they are making an effort…
$0.1271$
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a toy store owner is tracking how much kids spend each month on toys. w…
All of the kids who buy toys.
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a musician wanted to see what people who bought his last album thought …
A selection of 3,294 people who bought the album.
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determine whether the finite correction factor should be used. if so, u…
$0.4969$
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in paragraph 5, the word fragile comes from the latin root word franger…
break
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determine if the finite correction factor should be used. if so, use it…
$0.0004$
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word study amuse discuss publish unit value stubborn computer customer …
1 - 4: unit, uniform, unison, union 5: custody 6 - 11: insult, accuse, dispute, punish, punishment 12: acute 13: tuxedo 14 - 15: budge, smudge 16: continual 17 - 20: community, pu…
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determine if the finite correction factor should be used. if so, use it…
$0.0013$