Answered: use iMessage while the other half only…

Name: Use the following information to answer the question. A researcher wan
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Description: Use the following information to answer the question. A researcher wants to study different messaging platforms by collecting data on 40 individuals. Half of the individuals only use iMessage while the other half only use What's App. For the individu

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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Use the following information to answer the question.

A researcher wants to study different messaging platforms by collecting data on 40 individuals. Half of the individuals only use iMessage while the other half only use What's App. For the individuals who only used iMessage, they sent an average of 280 messages with a sample variance of 170 in the past week. For the individuals who only used What's App, they sent an average of 295 messages with a sample variance of 182 in the past week. Determine if there is a significant difference between the average messages sent between the two groups of individuals. Use a significance level of 1%.

What is the alternative hypothesis?

Group of answer choices

A. The iMessage group on average sent more messages than the What's App group.

B. There is a difference in the average number of messages sent between the two groups.

C. The iMessage group on average sent less messages than the What's App group.

D. There is no difference in the average number of messages sent between the two groups.

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