Using traditional methods, it takes 9.7 hours to receive a basic driving license. The new license training method uses computer aided instruction (CAI) has been proposed. A researcher use that technique with 13 students in observed that they had a mean of 9.8 hours with a standard deviation of 1.8. 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. make the decision to reject or fail to reject the null hypothesis.

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Asked Apr 12, 2019
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Using traditional methods, it takes 9.7 hours to receive a basic driving license. The new license training method uses computer aided instruction (CAI) has been proposed. A researcher use that technique with 13 students in observed that they had a mean of 9.8 hours with a standard deviation of 1.8. 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. make the decision to reject or fail to reject the null hypothesis.

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Expert Answer

Step 1

Given a sample of 13 students with sample mean 9.8 hours and standard deviation 1.8.

level of significance = 0.1

Null hypothesis : Ho : µ = 9.7

Alternative Hypothesis  : Ha : µ ≠ 9.7

given that population distribution is approximately normal distribution.

Step 2

The test statistic is given by below shown formula. After substituting the value swe get the test statistic as...

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Hypothesis Testing

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