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According to industry specifications, the standard deviation of gasket thicknesses for a given application must be no more than 3 thousandths of an inch. In a random sample of 25 gaskets produced by one of the firms, the sample standard deviation is found to be 3.7 thousandths of an inch.
Assuming the population of thicknesses is normally distributed, and using α = 0.025, examine whether the firm could be in violation of the industry specification. Based on the chi-square table, what is the most accurate statement that can be made about the p-value for the test?
A standard deviation of 20. If the seller wishes to have adequate stock 95% of the time, how many of the games must she keep on hand.
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a statewide survey of 1706 california adultsrsquo residents include the following question would you favor or oppose
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Suppose the true population proportion is 68%. What is the probability of observing a sample proportion 64% or smaller.
the state test scores for 12 randomly selected high school seniors are shown on the right. assume the population is
a researcher is comparing 6 groups to test if they have the same means. there are 62 data values altogether. the
suppose a simple random sample of size 50 is selected from a population with ? 10. find the value of the standard
What is the probability that the second household selected will have a traditional landline telephone? Round off your answer to the fourth place of decimal.
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