Question

Let μ denote the true average tread life of a certain type of tire...

A. (a) Reject H0; (b) 0.0111; (c) n = 160

B. (a) Fail to reject H0; (b) 0.0111; (c) n = 160

C. (a) Reject H0; (b) 0.0889; (c) n = 64

D. (a) Fail to reject H0; (b) 0.0889; (c) n = 64

Answer 1

The correct option is D. (a) Fail to reject H0; (b) 0.0889; (c) n = 64

Step-by-step explanation:

The question is asking which option correctly represents the decision made based on a given hypothesis test. To determine this, we need to examine the given information:

1. Alpha: 0.05
2. Decision: Reject the null hypothesis
3. Reason for decision: The p-value is less than 0.05
4. Conclusion: There is sufficient evidence to conclude that the mean lifespan of the tires is less than 50,000 miles

Based on this information, the correct option is D. (a) Fail to reject H0; (b) 0.0889; (c) n = 64