Question 1
pts
(CO 5) A company claims that its heaters last more than 5 years. Write the null and
alternative hypotheses and note which is the claim.
Ho: μ = 5 (claim), Ha: μ ≥ 5
Ho: μ > 5 (claim), Ha: μ ≤ 5
Correct Answer
Ho: μ ≤ 5, Ha: μ > 5 (claim)
You Answered
Ho: μ ≤ 5, Ha: μ < 5 (claim)
Question 2
pts
(CO 5) An executive claims that her employees spend no less than 2.5 hours each
week in meetings. Write the null and alternative hypotheses and note which is the
claim.
Ho: μ ≤ 2.5 (claim), Ha: μ > 2.5
Correct Answer
Ho: μ ≥ 2.5 (claim), Ha: μ < 2.5
You Answered
Ho: μ > 2.5, Ha: μ ≤ 2.5 (claim)
Ho: μ = 2.5, Ha: μ ≥ 2.5 (claim)
See text page 349
Question 3
, pts
(CO 5) In hypothesis testing, a key element in the structure of the hypotheses is
that the alternative hypothesis has the ________________________.
truth
You Answered
claim
equality
Correct Answer
simple inequality
Question 4
pts
(CO 5) A landscaping company claims that at most 90% of workers arrive on time.
If a hypothesis test is performed that fails to reject the null hypothesis, how would
this decision be interpreted?
There is not sufficient evidence to support the claim that at least 90% of workers
arrive on time
There is not sufficient evidence to support the claim that at most 90% of workers
arrive on time
There is sufficient evidence to support the claim that a least 90% of workers arrive
on time
pts
(CO 5) A company claims that its heaters last more than 5 years. Write the null and
alternative hypotheses and note which is the claim.
Ho: μ = 5 (claim), Ha: μ ≥ 5
Ho: μ > 5 (claim), Ha: μ ≤ 5
Correct Answer
Ho: μ ≤ 5, Ha: μ > 5 (claim)
You Answered
Ho: μ ≤ 5, Ha: μ < 5 (claim)
Question 2
pts
(CO 5) An executive claims that her employees spend no less than 2.5 hours each
week in meetings. Write the null and alternative hypotheses and note which is the
claim.
Ho: μ ≤ 2.5 (claim), Ha: μ > 2.5
Correct Answer
Ho: μ ≥ 2.5 (claim), Ha: μ < 2.5
You Answered
Ho: μ > 2.5, Ha: μ ≤ 2.5 (claim)
Ho: μ = 2.5, Ha: μ ≥ 2.5 (claim)
See text page 349
Question 3
, pts
(CO 5) In hypothesis testing, a key element in the structure of the hypotheses is
that the alternative hypothesis has the ________________________.
truth
You Answered
claim
equality
Correct Answer
simple inequality
Question 4
pts
(CO 5) A landscaping company claims that at most 90% of workers arrive on time.
If a hypothesis test is performed that fails to reject the null hypothesis, how would
this decision be interpreted?
There is not sufficient evidence to support the claim that at least 90% of workers
arrive on time
There is not sufficient evidence to support the claim that at most 90% of workers
arrive on time
There is sufficient evidence to support the claim that a least 90% of workers arrive
on time
