Question

The mean lifetime of a tire is 37 months with a variance of 81.If 149 tires are sampled what is the probability that the mean of the sample with differ from the population mean by less than 1.69 months round your answer to four decimal places.

Answer 1

Step 1:

In this question, we are given the following:

The mean lifetime of a tire is 37 months with a variance of 81.

If 149 tires are sampled what is the probability that the mean of the sample with differ from the population mean by less than 1.69 months

round your answer to four decimal places.

Step 2:

The details of the solution are as follows:

CONCLUSION:

The final answer is:

`\begin{gathered} 0.\text{ 9781} \\ (\text{ correct to four decimal places\rparen} \end{gathered}`