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 word that means ends for a period of time. every january, th…
adjourns
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question 4 of 10. step 1 of 1 calculate the standard score of the given…
$0.07$
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read the excerpt from black boy. when i awakened one morning my mother …
Wright notes being overwhelmed by faces and voices and describes the judge as being "high above."
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read the excerpt from black boy from the white landowners above him the…
It takes away his sense of humanity and his ability to feel
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a die is rolled nine times and the number of times that two shows on th…
A. 1.5 twos
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a test consists of 10 true/false questions. to pass the test a student …
C. 0.377
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twenty percent of adults in a particular community have at least a bach…
C. \(P(x\geq30)\)
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what does it mean to say that the trials in a binomial experiment are i…
A. The outcome of one trial does not affect the outcomes of the other trials.
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the following table describes the results of roadworthiness tests of fo…
D. 0.046
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a tennis player makes a successful first serve 51% of the time. if she …
None of the provided options are correct. The calculated probability is approximately $0.184$.
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determine whether the following value is a continuous random variable, …
a. A. It is a continuous random variable. b. C. It is not a random variable. c. B. It is a discrete random variable. d. B. It is a discrete random variable. e. B. It is a discrete…
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mars, inc. claims that 20% of its m&m plain candies are orange. a sampl…
C. $\mu = 20,\sigma = 4.0$
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based on a comcast survey, there is a 0.8 probability that a randomly s…
B. 0.00467
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the probability that a randomly selected adult in a particular communit…
D. Yes, because the probability of smoking is the same, even when the income condition is added, the two events are independent.
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basic probability review worksheet - fall 2025 a 6 - sided die is rolle…
19. $\frac{1}{20}$ 20. $\frac{3}{10}$ 21. $\frac{3}{20}$ 22. $\frac{1}{4}$ 23. $\frac{1}{10}$ 24. $\frac{19}{20}$ 25. $0$
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fill in the blank to complete the statement below. two events e and f a…
$P(E)$
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the table below displays results from experiments with polygraph instru…
\(\frac{40}{59}\approx0.678\)
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the data represent the results for a test for a certain disease. assume…
$0.036$
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complete the following statement. the conditional probability of b give…
D. assuming that event A has occurred, and then calculating the probability that event B will occur
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let event a = subject is telling the truth and event b = polygraph test…
C. The probability that the polygraph indicates lying given that the subject is actually telling the truth.
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explain how to read the notation p(e|f). choose the correct answer belo…
the probability of E given F
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to reduce laboratory costs, water samples from three public swimming po…
$0.015$
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based on a poll, 61% of internet users are more careful about personal …
The probability that at least one of them is careful about personal information is $0.941$. C. It is very possible that the result is not valid because the sample may not be repre…
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based on a poll, 61% of internet users are more careful about personal …
$0.941$
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fill in the blank. a ______ probability of an event is a probability ob…
A. conditional
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fill in the blank. the complement of \at least one\ is ________. the co…
none
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fill in the blank. \at least one\ is equivalent to ________. \at least …
One or more
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a 6 - sided die is rolled once. find 1. p(roll a 5) 2. p(roll a 1 or 6)…
1. $\frac{1}{6}$ 2. $\frac{1}{3}$ 3. $\frac{1}{2}$ 4. $\frac{1}{3}$ 5. $\frac{5}{6}$ 6. $\frac{1}{13}$ 7. $\frac{1}{2}$ 8. $\frac{1}{4}$ 9. $\frac{3}{13}$ 10. $\frac{2}{13}$ 11. $…
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when a man observed a sobriety checkpoint conducted by a police departm…
A. P($\overline{W}$) denotes the probability of screening a driver and finding that he or she is not intoxicated. First, we know that $P(W)=0.00613$. Since $P(W)+P(\overline{W}) =…
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the principle of redundancy is used when system reliability is improved…
a. 0.157 b. 0.02465 c. 0.00387 d. C. Yes, because total malfunction would not be impossible, but it would be unlikely.
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a 6 - sided die is rolled. find 1. p(roll a 5) 2. p(roll a 1 or 6) 3. p…
\(\frac{1}{6}\) - **2. \(P(\text{roll a }1\text{ or }6)\)**: - # Explanation: ## Step1: Determine total outcomes A 6 - sided die has \(n = 6\) possible outcomes. ## Step2: Determi…
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the principle of redundancy is used when system reliability is improved…
0.157
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the following table contains data from a study of two airlines which fl…
B. \(\frac{43}{87}\)
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fill in the blank. two events a and b are ____ if the occurrence of one…
independent
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base probability review worksheet - fall 2023 a six - sided die is roll…
1. **Explanation**: - **Step1: Recall probability formula** The probability of an event \(E\), \(P(E)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\)…
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multiple choice question when you are presenting your speech to an audi…
D. cite your sources orally
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multiple select question select all that apply using quotes accurately …
- making sure you do not quote out of context - making sure you do not misquote anyone
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multiple choice question daniel is presenting his speech to his classma…
He failed to cite his sources orally.
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select all that apply what two things should you do when including stat…
- D. Make sure the statistics included are easy to grasp. - E. Include statistics only when they are needed.
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multiple choice question a politician refers to a proposed new program …
B. quoting out of context
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what guideline should you follow when including statistics in a speech?…
A. Use only the most important statistics.
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select all that apply which three are guidelines for the effective use …
- Use statistics sparingly. - Use visual aids to clarify statistical trends. - Explain any statistics that are used.
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quotations or paraphrases from trusted sources that are used to support…
A. testimony
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multiple choice question polly is giving a speech about the world econo…
She could have translated the large numbers into terms listeners can relate to.
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true or false question listeners do not generally care whether or not a…
B. False
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select all that apply. what two things should you do when including sta…
- B. Include statistics only when they are needed. - E. Assume that the statistics you find are representative.
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select all that apply which three are tips for using statistics? □ do n…
- B. Use numbers sparingly. - D. Name the source of statistics. - F. Round off numbers.
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multiple choice question you have decided to take up running. you have …
D. testimony
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select all that apply. what are two things you should do to make sure y…
- Different groups of a population sample must be in correct proportion. - The sample size must be large enough.
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multiple select question select all that apply ivan is giving a speech …
- A. He explained the statistics in a way that would be meaningful to the audience. - C. He provided a visual for large statistics.
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statistics cannot be distorted or manipulated. o true o false
B. False
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multiple choice question statistics are similar to ______ in that they …
B. brief examples
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multiple select question select all that apply for which two reasons sh…
- Listeners can become bored if they are confronted by a large number of statistics. - Listeners may be confused or overwhelmed by too many statistics.
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multiple choice question the goal of reinforcing an example with statis…
A. typical
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multiple select question select all that apply which three questions sh…
- Do I use statistics to quantify my ideas? - Do I give exact numbers? - Are my numbers from reliable sources?
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multiple choice question when using statistics in a speech, a speaker s…
that the statistics are representative of what they claim to measure
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multiple choice question darrell huff, author of how to lie with statis…
B. do not lie
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select all that apply which two statements about using statistics in a …
- They can be used to show the seriousness of an issue. - They can be an effective way to clarify and support ideas.
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multiple select question select all that apply what are two effective w…
A. including related testimony C. using supporting statistics
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select all that apply when using a hypothetical example in a speech, it…
B. statistics, C. testimony
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differentiate between population density and population distribution.
Population density is a numerical measure of the number of people per unit area/volume. Population distribution is the spatial pattern of where people are located.
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lobbyist for the logging company: im asking you to help encourage congr…
Straw Man
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a runner for team 1 can run a race in 58.2 seconds. team 1 has running …
b) -5.00 c) -1.23 d) runner for team 1
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a child is 37.2 inches tall. the population of children of the same age…
a. child 2 b. - 0.31 c. - 0.43 d. child 1
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read the excerpt from act i, scene i of romeo and juliet. romeo: well, …
She does not want to fall in love with anyone.
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which excerpt from act v, scene iii of romeo and juliet best reflects t…
Prince: See what a scourge is laid upon your hate, That heaven finds means to kill your joys with love;
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to adapt something means to it. change duplicate examine write
A. change
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when evaluating an adaptation, the reader should consider whether the a…
tone
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read the excerpt from act i, scene v of romeo and juliet. romeo: so sho…
She's so beautiful that she stands out from that crowd.
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read the passage from romeo and juliet, act i, scene v. benvolio: away,…
updates the language.
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one way to discover tone is to study a texts , or the feelings associat…
connotations
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for the data shown above, find the following. round answer in the first…
36.6 km
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choose the correct answer below. a. an inherent zero is a zero that occ…
1. B. An inherent zero is a zero that implies none. 2. A. Number of years a college student was employed by a particular company, F. Average monthly precipitation in inches 3. B. …
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choose the correct answer below. a. an inherent zero is a zero that occ…
First question: B. An inherent zero is a zero that implies none. Second question: A. Number of years a college student was employed by a particular company; E. A student's level o…
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what is an inherent zero? describe three examples of data sets that hav…
B. An inherent zero is a zero that implies none.
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some of the top six final scores at the 2021 u.s. womens figure skating…
The data are quantitative at the ratio level of measurement.
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the graph to the right shows the annual number of fatalities, in thousa…
Horizontal axis: Interval Vertical axis: Ratio
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the graph to the right shows the annual number of fatalities, in thousa…
Interval
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the graph to the right shows the average annual income, in thousands, f…
For the horizontal axis: A. Interval For the vertical axis: D. Ratio
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the graph to the right shows the average annual income, in thousands, f…
Interval
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the graph to the right shows the responses to the question, \how seriou…
Identify the level of measurement of the data listed on the horizontal axis in the graph: Ordinal Identify the level of measurement of the data listed on the vertical axis in the …
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the graph to the right shows the responses to the question, \how seriou…
Ordinal
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the list of books that your friend read for school for the past five mo…
D. Nominal. The data are categorized using names, labels, or qualities, but the data cannot be ranked or arranged in order.
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the lengths (in centimeters) of 22 ford automobiles are listed. identif…
B. Ratio. The data can be ordered and differences between data entries are meaningful, and the zero entry is an inherent zero.
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determine whether the variable is qualitative or quantitative. explain …
C. The variable is quantitative because number of students is found by measuring or counting.
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determine whether the variable is qualitative or quantitative. explain …
B. The variable is quantitative because miles per gallon is found by measuring or counting.
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determine whether the variable is qualitative or quantitative. explain …
The variable is qualitative because types are non - numerical categories.
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determine whether the variable is qualitative or quantitative. explain …
The variable is quantitative because heights are numerical measurements.
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determine whether the variable is qualitative or quantitative. explain …
D. The variable is qualitative because gender describes an attribute or characteristic.
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determine whether the following statement is true or false. if it is fa…
D. The statement is false. A true statement is "For data at the interval level, you can calculate meaningful differences between data entries."
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name each level of measurement for which data can be quantitative. sele…
B. Interval, D. Ratio
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select all the levels of measurement for which data can be qualitative.…
A. Nominal C. Ordinal
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all it takes is one counterexample to prove a statement to be false. tr…
A. True
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passage (1) you might think car camping means that you literally sleep …
B. And
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passage (1) you might think car camping means that you literally sleep …
precisely
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instructions choose the best answer. if necessary, use the paper you we…
8
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quantitative reasoning. instructions: choose the best answer. if necess…
0.5
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2. a. what type of relationship does this graph suggest? b. what variab…
a. A non - linear (likely quadratic) relationship. b. Plot the number of accidents against the square of age.
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instructions solve the following problem and choose the best answer. qu…
0
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quantitative reasoning, algebra, and statistics - question 7 instructio…
$0.37$