questions: Is the average number of credits taken by MAT 131 students less than 12 credit hours? Test at 0.01 level of significance.

Summary statistics:

Column	n	Mean	Variance	Std. dev.	Std. err.	Median	Range	Min	Max	Q1	Q3
CREDITS	127	10.543307	12.329459	3.5113329	0.31158041	11	17	3	20	7	13

step 1

a. State the null and alternative hypothesis (be sure to include the symbol for parameter):

Ho:

H1:

b. State type of tail

c. State the alpha level (the level of significance):

step 2

State the value of x-bar, s, and n (round to two decimal places):

step 3

State the value of the test statistic (round to two decimal places):

step 4

State the p-value:

step 5

State the decision rule (reject Ho & conclude H₁ or do not reject Ho) and why:

step 6

a. State the conclusion of the test:

b. Are the results statistically significant? State Yes or No