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This activity used 90% confidence intervals because it is easy computationally to find the bottom 5% and the top 5% of a distribution. Usually, 95% confidence intervals are reported. Will 95% confidence intervals be longer or shorter than 90% confidence intervals? Explain.
(Distribution of Maximum). Suppose n numbers are drawn at random from f1; 2; ··· ;N g. What is the probability that the largest number drawn is a specified number k if sampling is (a) with replacement; (b) without replacement?
assume a normal distribution. draw a well-labeled curve for each part. round both to two decimal places.a. find
Distinct random variable
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
(a) What is the probability that a patient has the disease, if the test result is positive? (b) What is the probability that a patient has the disease, if the test result is negative?
Given that the advertising made a person more likely to try the product, what is the probability that the person is a man (show your work)?
What is the probability that a randomly selected monthly cell phone bill is more than $100?
A company is filling bags of rock salt to a level of 50 pounds. It believes that all bags are filled correctly, but would like to use a hypothesis test with an alpha of 0.05 to check this belief. The company will be using samples of 100 bags from eac..
Four different assembly processes were under consideration. Sixteen workers were randomly assigned to the four processes, eight per process. The number of correctly assembled units in an eight-hour work shift was recorded:
q1. what are the main difference between the frequency distribution of continuous data and discrete data.q2. how would
mary wants to see if she can predict the number of volunteer hours that potential volunteers will provide if she has
One measure of the effectiveness of cancer drugs is their ability to reduce the number of viable cancer cells in laboratory settings. In this experiment, the A549 line of malignant cells is plated onto petri dishes with various concentrations of t..
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