Answered: 180 reported using social media to…

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

A survey was conducted to investigate trends of romantic relationships and online behaviors.

Out of 250 adults in their 20s (20 to 29), 180 reported using social media to check on an ex (someone they used to date / be in a romantic relationship with).

Out of 260 adults in their 40s (40 to 49), 156 reported using social media to check on an ex.

You will perform a hypothesis test to see if the data provide evidence that there is a difference between the age groups in the proportions of people who checked on an ex.

What is the alternative hypothesis?

a.The proportion of people in their 20s who used social media to check on an ex is the same as the proportion of people in their 40s who used social media to check on an ex.

b. The proportion of people in their 20s who used social media to check on an ex is different from the proportion of people in their 40s who used social media to check on an ex.

c. The proportion of people in their 20s who used social media to check on an ex is greater than the proportion of people in their 40s who used social media to check on an ex.

d. The proportion of people in their 20s who used social media to check on an ex is less than the proportion of people in their 40s who used social media to check on an ex.

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