The Survey of Study Habits and Attitudes (SSHA) is a psychological test that mea

Question

The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitudes, and study habits of college students. Scores range from 0 to 200 and follow (approximately) a Normal distribution, with mean of 110 and standard deviation = 20. You suspect that incoming freshman have a mean , which is different from 110 because they are often excited yet anxious about entering college. To verify your suspicion, you test the hypotheses H0: = 110, Ha: 110 You give the SSHA to 50 students who are incoming freshman and find their mean score. The P-value of the test of the null hypothesis is the:

probability, assuming the null hypothesis is false, that the test statistic will take a value at least as extreme as that actually observed.

probability, assuming the null hypothesis is true, that the test statistic will take a value at least as extreme as that actually observed.

probability the null hypothesis is false.

probability the null hypothesis is true.

Explanation / Answer

We can not compute the mean score of SSHA score because the data is not given.

Pvalue: The The p-value is used as an provide the smallest level of significance at which the null hypothesis would be rejected.

i.e the pvalue is the minimum level of significance at which we reject the null hypothesis.

The pvalue is defined as the probability of obtaining a result equal to or "more extreme" than what was actually observed when Ho is true.

So B ) pvalue is the probability, assuming the null hypothesis is true, that the test statistic will take a value at least as extreme as that actually observed.

Option B ) is correct.

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