A manufacturer of fibre optic cables produce two types of cables type A and type B. They claim that the average strength of cable type A exceeds the average strength of cable type B by at least

12 kg. To test the claim 50 cables of each type were tested under the same conditions. Type A has an average strength of 86.7 kg with a standard deviation of 6.28 kg and type B has an average strength of 77.8 kg with a standard deviation of 5.61 kg. At a significance level of 5% test the manufacturer's claim.

A manufacturer of fibre optic cables produce two types of cables type A and type B. They claim that the average strength of cable type A exceeds the average strength of cable type B by at least

12 kg. To test the claim 50 cables of each type were tested under the same conditions. Type A has an average strength of 86.7 kg with a standard deviation of 6.28 kg and type B has an average strength of 77.8 kg with a standard deviation of 5.61 kg. At a significance level of 5% test the manufacturer's claim.

Multiple choices of answer

a. Type A exceeds the strength of type B

b. Type A will never exceed the strength of type B

c. Type B will never exceed the strength type A

d. Type A equal strength to type B

Answer rating: 100% (QA)

Grveen Type A Caber m 50 24 867 kg 628 kg the B Cable ng 50 ... View the full answer