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Answer 1

Answer #1

Ans. Point estimate, m = 10

Standard deviation, s = 3.464

Sample size, n = 8

=> Standard error of mean, SE = s/n^0.5 = 3.464/8^0.5 = 1.2247

At 95% level of confidence, z = 1.96

C) Margin of error, M = z*SE = 1.96*1.2247 = 2.400

D) 95% Confidence interval of mean, CI= [m - M, m + M]
=> CI = [10 - 2.4, 10+2.4]

=> CI = [7.6, 12.4]

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Answer 2

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