Question

Using traditional methods it takes 96 hours to receive an advanced driving license. A new training technique using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 100 students and observed that they had a mean of 95 hours. Assume the population standard deviation is known to be 7. Is there evidence at the 0.02 level that the technique reduces the training time?

Step 1 of 6 :  

State the null and alternative hypotheses.

Answer 1