A bottled water distributor wants to determine whether the mean amount of water

Question

A bottled water distributor wants to determine whether the mean amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company is actually 1 gallon. You know from the water bottling company specifications that the standard deviation of the amount of water is 0.03 gallon. You select a random sample of 50 bottles, and the mean amount of water per 1-gallon bottle is 0.994 gallon. Complete parts (a) through (d) belovw. a. Is there evidence that the mean amount is different from 1.0 gallon? (Use ?-001.) Let ? be the population mean. Determine the null hypothesis, Ho, and the alternative hypothesis, H1. What is the test statistic? ZSTAT-1.41 (Round to two decimal places as needed.) What is/are the critical value(s)? (Use ?-0.01.) (Round to two decimal places as needed. Use a comma to separate answers as needed.)

Explanation / Answer

c) Use Excel function to solve C

Use Excel function

NORMSINV(0.01/2)

= -2.58, 2.58

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