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: ? ≠ 8.3Ho: ? < 8.3; H1: ? = 8.3 Ho: ? = 8.3; H1: ? < 8.3Ho: ? = 8.3; H1: ? > 8.3 Is this a right-tailed, left-tailed, or two-tailed test? right-tailedtwo-tailed left-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: ? > 8.3Ho: ? ≠ 8.3; H1: ? = 8.3 Ho: ? = 8.3; H1: ? < 8.3Ho: ? = 8.3; H1: ? ≠ 8.3 Is this a right-tailed, left-tailed, or two-tailed test? left-tailedtwo-tailed right-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: ? > 4.5Ho: ? > 4.5; H1: ? = 4.5 Ho: ? = 4.5; H1: ? < 4.5Ho: ? = 4.5; H1: ? ≠ 4.5 Is this a right-tailed, left-tailed, or two-tailed test? two-tailedleft-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: ? = 4.5Ho: ? = 4.5; H1: ? < 4.5 Ho: ? = 4.5; H1: ? ≠ 4.5Ho: ? = 4.5; H1: ? > 4.5 Is this a right-tailed, left-tailed, or two-tailed test? two-tailedleft-tailed right-tailed

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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?

H_o: ? = 8.3; H₁: ? ≠ 8.3H_o: ? < 8.3; H₁: ? = 8.3 H_o: ? = 8.3; H₁: ? < 8.3H_o: ? = 8.3; H₁: ? > 8.3

Is this a right-tailed, left-tailed, or two-tailed test?

right-tailedtwo-tailed left-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?

H_o: ? = 8.3; H₁: ? > 8.3H_o: ? ≠ 8.3; H₁: ? = 8.3 H_o: ? = 8.3; H₁: ? < 8.3H_o: ? = 8.3; H₁: ? ≠ 8.3

Is this a right-tailed, left-tailed, or two-tailed test?

left-tailedtwo-tailed right-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?