Question

A manufacturer claims that its tires last at least 40,000 km. As a result of the test made with 25 randomly selected tires, the average endurance time of the tires was calculated as 39,750 km and the standard deviation was 387 km. Accordingly, what is the test statistic value?

Name: A manufacturer claims that its tires last at least 40,000 km. As a result of the test made with 25 randomly selected tires, the average endurance time of the tires was calculated as 39,750 km and the standard deviation was 387 km. Accordingly, what is the test statistic value?
Uploaded: 2022-02-23T11:45:01-08:00
Duration: 1 min 1 s
Channel: Rosina Dapaah
Description: A manufacturer claims that its tires last at least 40,000 km. As a result of the test made with 25 randomly selected tires, the average endurance time of the tires was calculated as 39,750 km and the standard deviation was 387 km. Accordingly, what is the test statistic value?

          A manufacturer claims that its tires last at least 40,000 km. As a result of the test made with 25 randomly selected tires, the average endurance time of the tires was calculated as 39,750 km and the standard deviation was 387 km. Accordingly, what is the test statistic value?

A manufacturer claims that its tires last at least 40,000 km. As a result of the test made with 25 randomly selected tires, the average endurance time of the tires was calculated as 39,750 km and the standard deviation was 387 km. Accordingly, what is the test statistic value?

Added by Debra G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Rosina Dapaah

02/23/2022

Step 1

Step 1: Calculate the difference between the sample mean and the claimed mean: \(39750 - 40000 = -250\) Show more…

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A manufacturer claims that its tires last at least 40,000 km. As a result of the test made with 25 randomly selected tires, the average endurance time of the tires was calculated as 39,750 km and the standard deviation was 387 km. Accordingly, what is the test statistic value?