Question

In: Statistics and Probability

Dean Halverson recently read that full-time college students study 20 hours each week. She decides to...

Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her university to see if there is evidence to show that this is not true at her university. A random sample of 32 students were asked to keep a diary of their activities over a period of several weeks. It was found that the average number of hours that the 32 students studied each week was 19.1 hours. The sample standard deviation of 4.2 hours.

Find the p-value.

round to four decimal points

Expert Solution

Solution :

= 20

=19.1

S =4.2

n = 32

This is the two tailed test .

The null and alternative hypothesis is ,

H0 : = 20

Ha : 20

Test statistic = t

= ( - ) / S / n

= (19.1-20) / 4.2 / 32

= -1.212

Test statistic = t = -1.212

P-value = 0.2347

orchestra answered 2 years ago

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