mathxl.com MAT 167 Fall 2017 Online T-O5 PM Homework: HW 7 Chapter 7 Score: 0 of

Question

mathxl.com MAT 167 Fall 2017 Online T-O5 PM Homework: HW 7 Chapter 7 Score: 0 of 1 pt 7.3.27-T You receive a brochure from a large university. The brochure indicates that the mean class size for 17 of 18 (15 HW Score: 60%, 10.8 of 18 pt full-time faculity is fewer than 33 students. You want to test this are shown in the table below. At 0.10, can claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results s claim? is normally 30 32 29 34 31 37 (a) Write the claim mathematically and identify Ho and Ha Which of the following correctly states Ho and Ha? 08, Ho : =33 Ha: #33 A. Ho : =33 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 = 0.001

Variable Sample Mean Std. Err. DF T-Stat P-value Data 30.111111 0.7998729 17 -3.6116849 0.0011

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