Question

Using traditional methods, it takes 11.3 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 29 students and observed that they had a mean of 11.2 hours with a standard deviation of 1.1. A level of significance of 0.05 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

Here claim is that the technique performs differently than the traditional method.

So hypothesis is vs

As distribution is normal so we will use t statistics

So P value is TDIST(0.49,28,2)=0.6280

As P value is greater than alpha=0.05, we fail to reject the null hypothesis

Hence we do not have sufficient evidence to support the claim that the technique performs differently than the traditional method.