Question

Using traditional methods, it takes **9.4** hours
to receive a basic driving license. A new license training method
using Computer Aided Instruction (CAI) has been proposed. A
researcher used the technique with **24** students and
observed that they had a mean of **9.6** hours with a
standard deviation of **1.4**. 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. Find the value of
the test statistic. Round your answer to three decimal places.

Answer #1

Solution :

This is the two tailed test,

The null and alternative hypothesis is ,

H0 : = 9.4

Ha : 9.4

Test statistic = t =

= ( - ) / s / n

= (9.6 - 9.4) / 1.4 / 24

Test statistic = t = 0.700

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