9.1 Quiz on Null and Alternative Hypotheses

What is the alternative hypothesis (Ha)?

• A statement of no difference between the variables

• A claim about the population that is contradictory to H0

• A statement that always has a symbol with an equal in it

• A hypothesis that is always rejected

Which symbol is never used in the alternative hypothesis (Ha)?

• <

• ≠

• =

• >

In hypothesis testing, what decision is made if the sample information favors the alternative hypothesis?

• Accept H0

• Reject H0

• Do not reject H0

• Accept Ha

Tags

CCSS.HSS.IC.B.5

What is the null hypothesis for the statement: 'We want to test whether the mean GPA of students in American colleges is different from 2.0'?

• H0: μ > 2.0

• H0: μ = 2.0

• H0: μ ≠ 2.0

• H0: μ < 2.0

Tags

CCSS.HSS.IC.B.5

CCSS.HSS.IC.A.1

What is the alternative hypothesis for the statement: 'We want to test if college students take less than five years to graduate from college, on the average'?

• Ha: μ ≥ 5

• Ha: μ = 5

• Ha: μ < 5

• Ha: μ > 5

Which of the following is true about the null hypothesis (H0)?

• It never has a symbol with an equal in it

• It always has a symbol with an equal in it

• It is always rejected

• It is always accepted