Question

An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000 km. A random sample of 160 tyres is having mean 22,000 km with a standard deviation of 5000 km. Validate the claim of the manufacturer at 5\% level of significance. \newline (critical value =1.645) \newline (5 marks)

Name: An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000 km. A random sample of 160 tyres is having mean 22,000 km with a standard deviation of 5000 km. Validate the claim of the manufacturer at 5% level of significance. (critical value =1.645) (5 marks)
Uploaded: 2024-03-01T20:16:04-08:00
Duration: 2 min 7 s
Channel: Tim Thornhill
Description: An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000 km. A random sample of 160 tyres is having mean 22,000 km with a standard deviation of 5000 km. Validate the claim of the manufacturer at 5% level of significance. (critical value =1.645) (5 marks)

          An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000 km. A random sample of 160 tyres is having mean 22,000 km with a standard deviation of 5000 km. Validate the claim of the manufacturer at 5\% level of significance. \newline (critical value =1.645) \newline (5 marks)

An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000 km. A random sample of 160 tyres is having mean 22,000 km with a standard deviation of 5000 km. Validate the claim of the manufacturer at 5% level of significance. (critical value =1.645) (5 marks)

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Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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Solved by Expert Tim Thornhill

03/01/2024

Step 1

The manufacturer claims that the average life of a tyre is more than 20,000 km. Null hypothesis H₀: μ ≤ 20,000 km Alternative hypothesis H₁: μ > 20,000 km This is a one-tailed test since we are only checking if the average life is more than the claimed value. Show more…

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An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000km. A random sample of 160 tyres is having mean 22,000km with a standard deviation of 5000km. Validate the claim of the manufacturer at 5% level of significance. (critical value =1.645 ) (5 marks) An automobile tyre manufacturer claims that the average life of a particular grade of tyre is more than 20,000 km. A random sample of 160 tyres is having mean 22,000 km with a standard deviation of 5000 km.Validate the claim of the manufacturer at 5% level of significance (critical value =1.645) (5marks)