A Recent Study Focused on the Number of Times Men

question 38

Multiple Choice

A recent study focused on the number of times men and women send a Twitter message in a day. The information is summarized next. At the .01 significance level, is there a difference in the mean number of times men and women send a Twitter message in a day? Based on the p-value, what is your conclusion?

• A)Reject the null hypothesis and conclude the means are different.
• B)Reject the null hypothesis and conclude the means are the same.
• C)Fail to reject the null hypothesis.
• D)Fail to reject the null hypothesis and conclude the means are different.

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Definitions:

Clavicle

A long bone that serves as a strut between the shoulder blade and the sternum or breastbone, also known as the collarbone.

Shoulder Blade

The shoulder blade, or scapula, is a large, flat bone located on the back portion of the ribcage that connects the humerus (upper arm bone) with the clavicle (collarbone) and provides attachment points for muscles of the shoulder and back.

Scapula

A flat, triangular bone located at the back of the shoulder, also known as the shoulder blade.

Dislocated Shoulder

A condition where the head of the upper arm bone is displaced from the shoulder socket, causing pain and immobility.