Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

The TTC has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles

image text in transcribed
image text in transcribed
The TTC has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,825 bus miles and a sample standard deviation of 175 bus miles. Complete parts (a) and (b) below. a. Is there evidence that the population mean bus miles is more than 3,800 bus miles? (Use a 0.10 level of significance.) State the null and alternative hypotheses. Ho: HV Hy : H V (Type integers) Find the test statistic for this hypothesis test. The test statistic t = (Round to two decimal places as needed.) The critical value for the test statistic is(are). (Round to two decimal places as needed) Is there sufficient evidence to reject the null hypothesis using a = 0.10? O A. Do not reject the null hypothesis. There is insufficient evidence at the 0.10 level of significance that the population mean bus miles is greater than 3,800 bus miles. O B. Reject the null hypothesis. There is sufficient evidence at the 0.10 level of significance that the population mean bus miles is greater than 3,800 bus miles O C. Reject the null hypothesis. There is sufficient evidence at the 0.10 level of significance that the population mean bus miles is less than 3,800 bus miles O D. Do not reject the null hypothesis. There is insufficient evidence at the 0.10 level of significance that the population mean bus miles is less than 3,800 bus miles. b. The p-value is . (Round to 3 decimal places as needed.) What does this p-value mean given the results of part (a)? O A. The p-value is the probability that the actual mean is 3,825 bus miles or less. O B. The p-value is the probability that the actual mean is 3,800 bus miles or greater given the sample mean is 3,825 bus miles. O C. The p-value is the probability that the actual mean is greater than 3,825 bus miles. O D. The p-value is the probability of getting a sample mean of 3,825 bus miles or greater if the actual mean is 3,800 bus miles

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Elementary Point-Set Topology A Transition To Advanced Mathematics

Authors: Andre L Yandl, Adam Bowers

1st Edition

0486811018, 9780486811017

More Books

Students also viewed these Mathematics questions