Question

I need to learn how to work this problem (NOT USING EXCEL). I am studying for a text and my brain just doesn’t get

these. I know this is a 2 sample equation but need help with formula. Thank you.

A survey of high school boys and girls using Facebook per day is shown below:

Sample # Boys = 45, Girls = 33

Sample Mean Boys = 40, Girls = 30

Population Standard Deviation Boys = 8, Girls = 9

At the .01 significance level, is there a difference in the mean num

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