Question

A sociologist focusing on popular culture and media believes that the average number of hours per week (hrs/week) spent using social media is greater for women than for men. Examining two independent simple random samples of 100 individuals each, the researcher calculates sample standard deviations of 2.3 hrs/week and 2.5 hrs/week for women and men respectively. If the average number of hrs/week spent using social media for the sample of women is 1 hour greater than that for the sample of men. If you are interested in the claim that women are not different than men when it comes to using social media weekly, then using ? = 5% your conclusion would be: The observed difference in average number of hrs/week spent using social media is not rejected A conclusion is not possible without knowing the average number of hrs/week spent using social media in each sample The observed difference in average number of hrs/week spent using social media is rejected A conclusion is not possible without knowing the population sizes

          A sociologist focusing on popular culture and media believes that the average number of hours per week (hrs/week) spent using social media is greater for women than for men. Examining two independent simple random samples of 100 individuals each, the researcher calculates sample standard deviations of 2.3 hrs/week and 2.5 hrs/week for women and men respectively. If the average number of hrs/week spent using social media for the sample of women is 1 hour greater than that for the sample of men.

If you are interested in the claim that women are not different than men when it comes to using social media weekly, then using ? = 5% your conclusion would be:

The observed difference in average number of hrs/week spent using social media is not rejected
A conclusion is not possible without knowing the average number of hrs/week spent using social media in each sample
The observed difference in average number of hrs/week spent using social media is rejected
A conclusion is not possible without knowing the population sizes

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A sociologist focusing on popular culture and media believes that the average number of hours per week (hrs/week) spent using social media is greater for women than for men. Examining two independent simple random samples of 100 individuals each, the researcher calculates sample standard deviations of 2.3 hrs/week and 2.5 hrs/week for women and men respectively. If the average number of hrs/week spent using social media for the sample of women is 1 hour greater than that for the sample of men.

If you are interested in the claim that women are not different than men when it comes to using social media weekly, then using ? = 5% your conclusion would be:

The observed difference in average number of hrs/week spent using social media is not rejected
A conclusion is not possible without knowing the average number of hrs/week spent using social media in each sample
The observed difference in average number of hrs/week spent using social media is rejected
A conclusion is not possible without knowing the population sizes

Added by Julie C.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert David Nguyen

12/17/2021

Step 1

The null hypothesis (H0) is that there is no difference in the average number of hours per week spent using social media between women and men. The alternative hypothesis (H1) is that there is a difference. Show more…

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A sociologist focusing on popular culture and media believes that the average number of hours per week (hrs/week) spent using social media is greater for women than for men. Examining two independent simple random samples of 100 individuals each, the researcher calculates sample standard deviations of 2.3 hrs/week and 2.5 hrs/week for women and men respectively. If the average number of hrs/week spent using social media for the sample of women is one hour greater than that for the sample of men, and you are interested in the claim that women are not different than men when it comes to using social media weekly, then using α = 0.05, your conclusion would be: The observed difference in average number of hrs/week spent using social media is not significant.

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Transcript

00:01 Hi, i'm david and i'm here to help you answer your question.

00:03 Now let me bring up your question here.

00:07 In this question we're going to discuss about the hypothesis testing.

00:13 In this test here we want to test the known hypothesis that the mean between the woman and the man will be no difference.

00:22 It will be the male on the man will be the same as the mean of the woman.

00:28 The alternating one here, there will be different.

00:31 So mean of the men will be different from the mean the woman.

00:37 And now the question gives us that the standard the sample standard division of the woman it will equal to the 2 .3.

00:51 Standard division of the men equal to the 2 .5.

00:56 The symbol size of the woman equal to sample size of the man equal to 100.

01:03 And we also given that the sample mean of the woman is one hour greater than the symbol mean of the man.

01:12 So x bar of the woman and then minus x bar on the man it will equal to one.

01:21 So from here we should be able to obtain the test statistics and it will be the z here.

01:29 And the formulas tells us that it will be the x bar of the the woman minus x par on the man dividing by the square root of the n woman times s double s woman square and this one should be the n woman minus one times standard division on the woman square plus n of the man times minus one times with the s man square everything will divide by n man plus n guman minus two...

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