A consumer advocate conducted a hypothesis test at the 5% significance level to determine if the mean level of impurities in a bottled water product is higher than the manufacturer's advertised value of 20 parts per million. The advocate collected 25 samples, measured the impurities, calculated a test statistic and obtained a p-value of 0.0423. Which of the following correctly states the advocate's conclusion and reason for the conclusion? A. Reject the null hypothesis because the p-value is smaller than the significance level of the test. B. Fail to reject the null hypothesis because the p-value is larger than the significance level of the test. C. Accept the null hypothesis because the p-value is smaller than the significance level of the test. D. The conclusion cannot be determined from the information given without knowing the sample mean and standard deviation.

A consumer advocate conducted a hypothesis test at the 5% significance level to determine if the mean level of impurities in a bottled water product is higher than the manufacturer's advertised value of 20 parts per million. The advocate collected 25 samples, measured the impurities, calculated a test statistic and obtained a p-value of 0.0423. Which of the following correctly states the advocate's conclusion and reason for the conclusion? A. Reject the null hypothesis because the p-value is smaller than the significance level of the test. B. Fail to reject the null hypothesis because the p-value is larger than the significance level of the test. C. Accept the null hypothesis because the p-value is smaller than the significance level of the test. D. The conclusion cannot be determined from the information given without knowing the sample mean and standard deviation.

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Description: A consumer advocate conducted a hypothesis test at the 5% significance level todetermine if the mean level of impurities in a bottled water product is higher than themanufacturer's advertised value of 20 parts per million. The advocate collected 25s

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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