Suppose the coffee industry claimed that the average adult drinks 1.7 cups of co

Question

Suppose the coffee industry claimed that the average adult drinks 1.7 cups of coffee per day To test this claim, a random sample of 40 adults was selected, and then average coffee consumption was found to be 1.85 cups per day Assume the standard deviation of daily coffee consumption per day is 0.6 cups. Using alpha = 0.10, complete parts a and b below. Is the coffee industry's claim supported by this sample? Determine the null and alternative hypotheses. H_0: mu H_1: mu The z-test statistic is The critical z-score(s) is (are). Because the test statistic the null hypothesis. Determine the p-value for this test. The p-value is.

Explanation / Answer

Ho : miu = 1.7

H1 : miu is differerent from 1.7

z = ( 1.85-1.7) / 0.6 / srqt 40

Z = 1.58

critical values are +/- 1.64

because test stats is lower than critical value we fail to reject Ho

p value : 0.0571

hope you help!

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