In the past, the mean lifetime for a certain type of flashlight battery has been 9.5...
In the past, the mean lifetime for a certain type of flashlight battery has been 9.5 hours.9.5 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:μ=9.5 hours and Ha:μ>9.5 hours. 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 running time has not increased.
a. type 1error
b. type 2 error
c. no error
Homework Answers
Type I error
Type I error occurs if one incorretly rejects the null
hypothesis.
Here the conclusion is made that mean time is greater than 9.5
hours in fact it is not.
Hence type I error occurred
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