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How do I solve the following problem? Construct a 95% Confidence Interval to estimate the population mean/proportion in the claim? I'm not actually sure if

How do I solve the following problem?

Construct a 95% Confidence Interval to estimate the population mean/proportion in the claim? I'm not actually sure if i solved the mean properly.

Age Range Face Book Twitter Instagram TikTok 21-25 8 4 5 7 26-30 3 10 13 Sum 11 4 15 20 Average 5.5 2 7.5 10 Standard Deviation 1.56 2 1.29 1.34 Frequency 11 4 15 20 Range 5 4 5 6 Variance Mean 5.5 2 15 20 Median 21.33 23 26.75 26.65

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