Using traditional methods, it takes 10.7 hours to receive a basic driving licens

Question

Using traditional methods, it takes 10.7 hours to receive a basic driving license. A new
license training method using Computer Aided Instruction (CAI) has been proposed. A re-
searcher used the technique with 9 students and observed that they had a mean of 10.5 hours
with a variance of 1.00. A level of significance of 0.1 will be used to determine if the technique
performs differently than the traditional method. Make a decision to reject or fail to reject
the null hypothesis. Assume the population distribution is approximately normal.

Explanation / Answer

Ho ; miu = 10.7

Ha : miu is not equal 10.7

Z = ( 10.5 - 10.7 ) / ( srqt 1 /9 )

Z = -0.6

p value : 0.2743

since p value is greater than 0.1 we fail to reject Ho

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