A manufacturer claims that the mean amount of juice in its 16 ouncebottles is 16.1 ounces. A consumer advocacy group wants to perform a significance test to determine whether the mean amount is actually less than this. The hypotheses are H0: = 16.1 ounces and Ha: < 16.1 ounces. Suppose that the results of the sample lead to rejection of the null hypothesis.

Classify that conclusion as a Type I error, a Type II error, or a correct decision, if in fact the mean amount of juice, , is less than 16.1ounces.

A. Type I error

B. Type II error

C. No error

In the past, the mean lifetime for a certain type of flashlight battery has been9.5 hours.The manufacturer has introduced a change in the production method and wants to perform a significance test to determine whether the mean lifetime has increased as a result. The hypotheses are H0: =9.5 hours and Ha: >9.5 hours. Suppose that the results of the sample lead to rejection of the null hypothesis.

Classify that conclusion as a Type Ierror, a Type IIerror, or a correctdecision, if in fact the mean running time has not increased.

A. Type I error

B. Type II error

C. No error