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Suppose that your favorite cafe is considering introducing a decaf version of its house blend, and is interested in learning whether customers enjoy the decaf version as much as the regular; and in addition, whether women's preferences regarding the two coffees is different from men's.
Describe how to design an experiment to study these questions.
10 squirrels were found to have an average weight of 9.6 ounces with a sample standard deviation is 0.30. find the 99
explain why it is possible to observe a strong relationship between 2 variables based on the value of eta-squared
The mean increase is $332, and the standard deviation is $108. Give a 99% confidence interval for the mean amount of the increase. Does omitting the annual fee induce customers to charge more on their credit cards?
in a class of 50 students the result of a particular examination is a true mean of 70 and a true variance of 12. it is
According to the regional bar assoc., 60% of people who take the bar exam pass. Find the approximate probability that at least 61% of 200 randomly selected people taking the bar will pass. Round to three decimal places as needed.
using the data shown below suppose we focus on the proportions of patients who show improvement. is there a
Determine a 99% confidence interval for mean pH in rainfall. How would you distinguish interval?
a satellite system consists of 4 components and can function adequately if at least 2 of the 4 components are in
These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?
a production process requires a fixed cost of 50000. the variable cost per unit is 25 and the revenue per unit is
Can the researcher conclude that humidity has a significant effect on eating behavior? Use a two-tailed test with α=.05. Compute the estimated d and r2 to measure the size of the treatment effect.
an investor estimates that there is a 75 chance that a particular mutual funds price will increase to 100 per share
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