Score: 0 of 4 pts 13 of 16 (16 complete) HW Score: 50 9896, 2038 or 40 pts 7.3.2

Question

Score: 0 of 4 pts 13 of 16 (16 complete) HW Score: 50 9896, 2038 or 40 pts 7.3.27-T E Question Help You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 33 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below At =0 10, can you support the university's claim? Complete parts a through d below Assume the population is normally distributed 36 28 29 31 31 38 25 25 26 25 32 29 29 27 32 30 (a) Write the claim mathematically and identify Ho and Ha Which of the following correctly states Ho and H2? A. Hop 33 Ha: s 33 D. Ho: -33 Ha : 33 C. Ho:11233 Ha :

Explanation / Answer

The statistical software output for this problem is:

One sample T hypothesis test:
: Mean of variable
H0 : = 33
HA : < 33

Hypothesis test results:

Hence,

P = 0.010

Variable Sample Mean Std. Err. DF T-Stat P-value Data 30.333333 1.0289915 17 -2.5915342 0.0095

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