For the following question(s): Professor Juarez thinks the students in her stati

Question

For the following question(s): Professor Juarez thinks the students in her statistics class this term are more creative than most students at this university. A previous study found that students at this university had a mean score of 35 on a standard creativity test. Professor Juarez finds that her class scores an average of 40 on this scale, with an estimated population standard deviation of 7. The standard deviation of the distribution of means comes out to 1.63. If Professor Juarez had 30 students in her class, and she wanted to test her hypothesis using the 5% level of significance, what cutoff t score would she use? (You should be able to figure this out without a table because only one answer is in the correct region.) Select One: -2.500 1.699 -113 304.11

Explanation / Answer

This is upper tail test.

degrees of freedom =n-1=30-1=29

since the this is upper tail test, t score is positive.

only two positive values, 1.699 and 304.11. The value 304.11 is not possible because this is too large for t critccal value.

The answer is b. 1.699

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