Question

A random sample of boots worn by 40 combat soldiers in a desert region showed an

average life of 1.08 years with a standard deviation of 0.05. under the standard conditions, the

boots are known to have an average life of 1.28 years. Construct a null and alternative

hypothesis for the statement “Is there reason to assert at a level of significance of 0.05 that use

in the desert cause the mean life of such boots to decrease” ?​

Answer 1

Answer:

This question is like this see

40 soldiers : average life is 1.08

0.05 in standard conditions

average time of boots is 1.28 years

Then construct a alternative