How much customers buy is a direct result of how much time they spend in the sto
ID: 3226375 • Letter: H
Question
How much customers buy is a direct result of how much time they spend in the store. A study of average shopping times in a large national houseware store gave the following information (Source: Why We Buy: The Science of Shopping by P. Underhill).
Women with female companion: 8.3 min.
Women with male companion: 4.5 min.
Suppose you want to set up a statistical test to challenge the claim that a woman with a female friend spends an average of 8.3 minutes shopping in such a store.
(a) What would you use for the null and alternate hypotheses if you believe the average shopping time is less than 8.3 minutes?
Ho: < 8.3; H1: = 8.3
Ho: = 8.3; H1: 8.3
Ho: = 8.3; H1: < 8.3
Ho: = 8.3; H1: > 8.3
Is this a right-tailed, left-tailed, or two-tailed test?
right-tailed
left-tailed
two-tailed
(b) What would you use for the null and alternate hypotheses if you believe the average shopping time is different from 8.3 minutes?
Ho: = 8.3; H1: 8.3
Ho: = 8.3; H1: > 8.3
Ho: = 8.3; H1: < 8.3
Ho: 8.3; H1: = 8.3
Is this a right-tailed, left-tailed, or two-tailed test?
right-tailed
left-tailed
two-tailed
Stores that sell mainly to women should figure out a way to engage the interest of men! Perhaps comfortable seats and a big TV with sports programs. Suppose such an entertainment center was installed and you now wish to challenge the claim that a woman with a male friend spends only 4.5 minutes shopping in a houseware store.
(c) What would you use for the null and alternate hypotheses if you believe the average shopping time is more than 4.5 minutes?
Ho: = 4.5; H1: 4.5
Ho: = 4.5; H1: > 4.5
Ho: = 4.5; H1: < 4.5
Ho: > 4.5; H1: = 4.5
Is this a right-tailed, left-tailed, or two-tailed test?
left-tailed
two-tailed
right-tailed
(d) What would you use for the null and alternate hypotheses if you believe the average shopping time is different from 4.5 minutes?
Ho: = 4.5; H1: < 4.5
Ho: = 4.5; H1: > 4.5
Ho: = 4.5; H1: 4.5
Ho: 4.5; H1: = 4.5
Is this a right-tailed, left-tailed, or two-tailed test?
two-tailed
right-tailed
left-tailed
Explanation / Answer
a) Correct answer: Ho: = 8.3; H1: < 8.3
It is left-tailed test
b) Correct answer: Ho: = 8.3; H1: 8.3
It is two tailed test
c)
Correct answer: Ho: = 4.5; H1: > 4.5
It is right tailed test
d) Correct Answer: Ho: = 4.5; H1: 4.5
It is two-tailed test
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