Calculate and interpret the margin of error with the sample of 22, confidence 85% and the...

Calculate and interpret the margin of error with the sample of 22, confidence 85% and the sample standard deviation 4.

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ANSWER:

Given data,

Calculate and interpret the margin of error with the sample of 22, confidence 85% and the sample standard deviation 4.

Sample size = n = 22

Sample standard deviation = s = 4

c = 85% = 85/100 = 0.85

= 1-c = 1-0.85 = 0.15

/2 = 0.15/2 = 0.075

Degree of freedom = df = n-1 = 22-1 = 21

Critical value = = = 1.494194

Margin of Error :

ME = * (s/sqrt(n))

ME = 1.494194 * (4/sqrt(22))

ME =1.2742529

ME =1.2743 (Rounded to four decimal places)

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