Question

Using traditional methods, it takes 11.8 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 13 students and observed that they had a mean of 11.9 hours with a standard deviation of 1.2. 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. State the null and alternative hypotheses.

Answer #1

To Test :-

H0 :-

H1 :-

Test Statistic :-

t = 0.3005

Test Criteria :-

Reject null hypothesis if

Result :- Fail to reject null hypothesis

Decision based on P value

P - value = P ( t > 0.3005 ) = 0.7689

Reject null hypothesis if P value <
level of significance

P - value = 0.7689 > 0.1 ,hence we fail to reject null
hypothesis

Conclusion :- Fail to reject null hypothesis

There is insufficient evidence to support the claim that the technique performs differently than the traditional method.

Using traditional methods it takes 94.094.0 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 on 7070 students and observed that they had a mean of
92.092.0 hours. Assume the standard deviation is known to be
6.06.0. Is there evidence at the 0.050.05 level that the technique
performs differently than the traditional method?
Step 1 of 5:
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