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for Scott, 2 questionsSuppose a university...

for Scott,

2 questionsSuppose a university advertises that its average class size is 31 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 40 classes was selected, and the average class size was found to be34.4 students. Assume that the standard deviation for class size at the college is 7 students. Using α=0.10, complete parts a and b below.

a. Does the student organization have enough evidence to refute the college's claim?

Determine the null and alternative hypotheses.

H0: μ

▼

not equals≠

less than

greater than or equals≥

nothing

H1: μ

▼

equals=

greater than>

greater than or equals≥

less than<

not equals≠

less than or equals≤

nothing

2 questionsSuppose a university advertises that its average class size is 31 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 40 classes was selected, and the average class size was found to be34.4 students. Assume that the standard deviation for class size at the college is 7 students. Using α=0.10, complete parts a and b below.

a. Does the student organization have enough evidence to refute the college's claim?

Determine the null and alternative hypotheses.

H0: μ

▼

not equals≠

less than

greater than or equals≥

nothing

H1: μ

▼

equals=

greater than>

greater than or equals≥

less than<

not equals≠

less than or equals≤

nothing

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