Question

xUsing traditional methods it takes 103 hours to receive an advanced driving license. A new training technique using Computer Aided Instruction (CAI) has been proposed. A researcher believes the new technique may reduce training time and decides to perform a hypothesis test. After performing the test on 170 students, the researcher fails to reject the null hypothesis at a 0.10 level of significance. What is the conclusion?

A. There is not sufficient evidence at the 0.10 level of significance that the new technique reduces training time.

B. There is sufficient evidence at the 0.10 level of significance that the new technique reduces training time.

Answer 1

Solution:

A researcher believes the new technique may reduce training.

i.e. <

So , null and alternative hypothesis are ,

H0: =   vs Ha: <  

The researcher fails to reject the null hypothesis at a 0.10 level of significance.

So , no significance .

Answer is

A. There is not sufficient evidence at the 0.10 level of significance that the new technique reduces training time.