Question

Using traditional methods, it takes 10.4 hours to receive a basic flying license. A new license training method using Computer-Aided Instruction (CAI) has been proposed. A researcher used the technique with 9 students and observed that they had a mean of 10.7 hours with a variance of 1.44. A level of significance of 0.1 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. Find the value of the test statistic. Round your answer to three decimal places.

Answer #1

We have for given sample,

Population mean for given sample=10.4

Sample mean=10.7

Sample standard deviation= s=1.2

Sample size =n=9

t test statistic formula is

=0.750

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Step 1 of 5:
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