1 The Carter Motor Company claims that it's new sedan, the Libra, will average more than...

 

Transcribed Image Text:

1 The Carter Motor Company claims that it's new sedan, the Libra, will average more than 23 miles per gallon in the city. Express the null and alternative hypothesis for a hypothesis test of the true mean miles per gallon. a) State the null hypothesis: Ho: A) H <23 B) H>23 C) H = 23 D) H * 23 b) State the alternate hypothesis: HA A) H <23 B) > 23 C) H = 23 D) H * 23 c) Is the hypothesis test right-tailed, left-tailed or two-tailed? 2 a) In the past, the mean running time for a certain type of flashlight battery has been 8.0 hours. The manufacturer has introduced a change in the production method and wants to perform an hypothesis test to determine whether the mean running time has changed as a result. Determine the null and alternative hypothesis. a) State the null hypothesis: # Ho: A) H <8.0 hours B) > 8.0 hours C) = 8.0 hours D) H 8.0 hours b) State the alternate hypothesis: HA A) H <8.0 hours B) > 8.0 hours C) H = 8.0 hours D) H * 8.0 hours The significance level and p-value of an hypothesis test are given. Decide whether or not the null hypothesis should be rejected. 3) a 0.10, P-value = 0.08 4) =0.10, P-value = 0.012 5) x 0.05, P-value = 0.058 A) Reject the null hypothesis B) Fail to reject the null hypothesis A) Reject the null hypothesis A) Reject the null hypothesis B) Fail to reject the null hypothesis B) Fail to reject the null hypothesis 1 The Carter Motor Company claims that it's new sedan, the Libra, will average more than 23 miles per gallon in the city. Express the null and alternative hypothesis for a hypothesis test of the true mean miles per gallon. a) State the null hypothesis: Ho: A) H <23 B) H>23 C) H = 23 D) H * 23 b) State the alternate hypothesis: HA A) H <23 B) > 23 C) H = 23 D) H * 23 c) Is the hypothesis test right-tailed, left-tailed or two-tailed? 2 a) In the past, the mean running time for a certain type of flashlight battery has been 8.0 hours. The manufacturer has introduced a change in the production method and wants to perform an hypothesis test to determine whether the mean running time has changed as a result. Determine the null and alternative hypothesis. a) State the null hypothesis: # Ho: A) H <8.0 hours B) > 8.0 hours C) = 8.0 hours D) H 8.0 hours b) State the alternate hypothesis: HA A) H <8.0 hours B) > 8.0 hours C) H = 8.0 hours D) H * 8.0 hours The significance level and p-value of an hypothesis test are given. Decide whether or not the null hypothesis should be rejected. 3) a 0.10, P-value = 0.08 4) =0.10, P-value = 0.012 5) x 0.05, P-value = 0.058 A) Reject the null hypothesis B) Fail to reject the null hypothesis A) Reject the null hypothesis A) Reject the null hypothesis B) Fail to reject the null hypothesis B) Fail to reject the null hypothesis