Question

URGENT. The Turkish Water Works Association reports that the per capita water use in a single-family home followed a normal distribution with mean µ=64 liters and standard deviation σ=9.4 liters per day. Mesa Mozaik is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-nine owners responded, and the sample mean water use per day was 60 liters. At the 0.01 level of significance, is that enough evidence to conclude that residents of Mesa Mozaik use less water on average?

a) Null hypothesis is Answer

b) Alternative Hypothesis is Answer

c) Test statistic is
Answer

d) Critical Value of the test at α=1% is
Answer

e) Does it appear at α=1% that population mean is less than 64 liters? Answer

f) For what values of α H0 can be rejected?
Answer
%

g) For what values of Xbar H0 can be rejected?
Answer

h) Find type II error of the test if µ=56 liters.
Answer
%

Answer 1

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