Question

Find the margin of error for the given values of​ c, σ​, and n. c=0.90​, σ=3.3,...

Find the margin of error for the given values of​ c, σ​, and n.

c=0.90​, σ=3.3, n=81.

Eequals= _ (Round to three decimal places as​ needed.)

Homework Answers

Answer #1

We know that :-

Margin of error = Critical value Standard error of the sample

Standard error of the sample = = = 0.3667

Critical value = Z/2

According to the problem : 1- = 0.90 =0.1 /2 = 0.05

  Critical value = Z/2 = Z0.05 = 1.645

Thus;

Margin of error = 1.645 0.3667 = 0.6031667

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