Question

In: Statistics and Probability

The following table represents the number of times a person reports brushing his/her teeth and the...

The following table represents the number of times a person reports brushing his/her teeth and the person's age. Using alpha at .05, Test if there is a significant relationship. Identify the P value.

                    Age   20-29     30-39     40-49    50+   

Never                          19          15          4            2         

Once a day.                 22          25          9            2        

Twice a day               35          40         52          58    

Three times a day      0         10           3          20   

Solutions

Expert Solution

We will use MINITAB software to get the answer,

we need to find is there any relationship between number of times a person reports brushing his/her teeth and the person's age

so we set the hypothesis as

H0: number of times a person reports brushing his/her teeth and the person's age are independently distributed

vs

H1: number of times a person reports brushing his/her teeth and the person's age are related

The MINITAB output is

Here we get p-value<0.05 hence we will reject H0 and claim that number of times a person reports brushing his/her teeth and the person's age are related to each other significantly at 95% confidence.


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