Do people post more on certain social media platforms compared to others? Three of the most popular social media platforms in the United States are Facebook, Twitter, and Instagram. To investigate the activity of users on each platform, a random sample of user data was collected on the number of monthly posts by users in a single month.

Facebook	Twitter	Instagram
11	13	20
14	29	26
20	9	11
10	19	13
10	18	11
14	11	18
7	18	23

(b)Find SSTOT. (Round your answer to three decimal places.)
SSTOT =
Find SSBET. (Round your answer to three decimal places.)
SSBET =
Find SSW and check that SSTOT = SSBET + SSW. (Round your answer to three decimal places.)
SSW =
Find d.f.BET.
d.f.BET =
Find d.f.W.
d.f.W =
Find MSBET. (Round your answer to three decimal places.)
MSBET =
Find MSW. (Round your answer to three decimal places.)
MSW =
Find the value of the sample test statistic F (F ratio). (Round your answer to two decimal places.)
Sample test statistic F (F ratio) =
What are the numerator degrees of freedom?
d.f.N =
What are the denominator degrees of freedom?
d.f.D =

(f)Make a summary table for the ANOVA test. (Round the answers for SS and MS to three decimal places and your F Ratio to two decimal places.)

Source of variation	Sum of squares	Degrees of freedom	Mean square (variance)	F-ratio	P-value	Test Decision
Between groups	?	?	?	?	P-value>0.100	Do not reject H0
Within groups	?	?	?
Total	?	?