A company that manufactures batteries used in electric cars is reporting that their newest model of battery has a mean lifetime, µ, of 25 years. To test the company's claim, a competitor has selected...

Question #3 pt. 1

Extracted text: A company that manufactures batteries used in electric cars is reporting that their newest model of battery has a mean lifetime, µ, of 25 years. To test the company's claim, a competitor has selected 43 of these batteries at random. The mean lifetime of the sample is 24.2 years. Suppose the population standard deviation of these lifetimes is known to be 4.2 years. Is there enough evidence to reject the claim that the mean lifetime of the newest model is 25 years? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis H, and the alternative hypothesis H,. Ho: 0 O