Question: QUESTION 12 In Jefferson county, the mean water usage per household for the month of January 2018 was .060 acre-feet (an acre-foot is the amount

QUESTION 12 In Jefferson county, the mean water usage per household for the month of January 2018 was .060 acre-feet (an acre-foot is the amount of water necessary to cover one acre to a depth of one foot.) This figure is based on the usage of all households in the county during that month. In January 2019, a random sample of 50 homes was selected, and water usage was recorded for each home in the sample. The mean water usage per household in the sample was .054 acre-feet with a standard deviation (s) of .016 acre-feet. The county would like to know whether the data support the claim that mean January water usage has declined. Conduct an appropriate statistical hypothesis test using a 0.01 significance level. Find the associated the P-value to four decimal places
Step by Step Solution
There are 3 Steps involved in it
Get step-by-step solutions from verified subject matter experts
