Using traditional methods it takes 102 hours to receive an advanced flying license. A new training technique using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 40 students and observed that they had a mean of 105 hours. Assume the population standard deviation is known to be 7. Is there evidence at the 0.02 level that the technique performs differently than the traditional method?     A) State the null and alternative hypotheses. B)Find the value of the test statistic. Round your answer to two decimal places. C)Specify if the test is one-tailed or two-tailed.

Question

Using traditional methods it takes 102 hours to receive an advanced flying license. A new training technique using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 40 students and observed that they had a mean of 105 hours. Assume the population standard deviation is known to be 7. Is there evidence at the 0.02 level that the technique performs differently than the traditional method?

 
 

A) State the null and alternative hypotheses.

B)Find the value of the test statistic. Round your answer to two decimal places.

C)Specify if the test is one-tailed or two-tailed.

 
 
 

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