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The probability that a randomly selected commuter listens to audiobooks during their commute is 0.40. Suppose that a sample of 10 commuters is selected, what is the probability that at most 3 of them listen to audiobooks?
Recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Simulate the birthday problem to find the first person with the same birthday as yours. Perform the simulation 500 times. How many people did it take to find the first match? Was it typically about the same as the theoretical expected value?
a fair dice is tossed. let x denote the number that appears and let y1 if an odd number appears and y3 if an even
Define the terms parameter and statistic. Be sure that the concepts of population and sample are included in your definitions.
slot machines have three drums with the same number of positions on each drum. each position contains a symbol. when
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? What is the p-value?
an io psychologist asks employees to complete surveys measuring job satisfaction and organizational citizenship
What is the population parameter of interest in the quote?- The phrase "an estimated 15 to 30 percent" indicates that scientists don't know precisely what percentage of the population has the allele. Explain why they don't know.
A new car salesperson knows that he sells cars to one customer out of 20 who enter the showroom. The probability that he will sell a car to exactly two of the next three customers is?
A survey indicates that male employees were more likely than females to relocate without being promoted. What information would you want to know before you accepted the results of this survey?
in order to conduct a survey of the us senate each senator is assigned a number from 1 to 100 and a computer is then
1.ginger root is used by many as a dietary supplement. a manufacturer of supplements produces capsules that are
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