According to data from the Environmental Protection Agency, the average daily water consumption for a household of

Question:

According to data from the Environmental Protection Agency, the average daily water consumption for a household of four people in the United States is approximately at least 243 gallons. (Source: http://www

.catskillcenter.org/programs/csp/H20/Lesson3/house3

.htm) Suppose a state agency plans to test this claim using an alpha level equal to 0.05 and a random sample of 100 households with four people.

a. State the appropriate null and alternative hypotheses.

b. Calculate the probability of committing a Type II error if the true population mean is 230 gallons.

Assume that the population standard deviation is known to be 40 gallons.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Business Statistics A Decision Making Approach

ISBN: 9780136121015

8th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry, Kent D. Smith

Question Posted: