Question

In: Statistics and Probability

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 60 students and observed that they had a mean of 100 hours. Assume the population variance is known to be 36. Is there evidence at the 0.05 level that the technique performs differently than the traditional method?

Question to answer:

H0: ?

Ha= ?

Find the value of the test statistic. Is it one tailed or two tailed?

Find the P value of the test statistic.

and lastly, does this reject null hypothesis or fail to reject null hypothesis?

Solutions

Expert Solution

This is the two tailed test .

The null and alternative hypothesis is

H0 : = 102

Ha : 102

Test statistic = z

= ( - ) /    / n

= (100 - 102) / 6 / 60

Test statistic = -2.582

P-value = 0.0098

P-value <

Reject the null hypothesis .

orchestra answered 2 years ago
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