Question

Express the confidence interval 30.4 % ± 5.1 % in interval form.

Express the confidence interval 30.4 % ± 5.1 % in interval form.

Math   Statistics-And-Probability   
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Answer #1

Solution :-

Given :

Point Estimate ( ) Margin of Error ( E )

30.4 % 5.1 %

0.304   0.051

Confidence Interval to be Expressed in interval form is,

- E < u < + E

0.304 - 0.051 < u < 0.304 + 0.051

0.253 < u < 0.355

( 0.253 , 0.355 )

Lower Confidence Interval = 0.253

Upper confidence Interval = 0.355

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