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Using traditional methods it takes 102 hours to receive an advanced flying license. A new training...

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 110 students and observed that they had a mean of 104 hours. Assume the population variance is known to be 49. Is there evidence at the 0.02 level that the technique lengthens the training time?

Step 2 of 6 :  Find the value of the test statistic. Round your answer to two decimal places.

Math   Statistics-And-Probability   
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