Question

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:

Enter the hypotheses:

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 2 of 5:

Enter the value of the z test statistic. Round your answer to two decimal places.

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 3 of 5:

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

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 4 of 5:

Enter the decision rule.

Step 5 of 5:

Enter the conclusion.