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in a survey of 2241 us adults in a recent year, 650 made a new's year...

in a survey of 2241 us adults in a recent year, 650 made a new's year resolution to eat healthier.  

construct a 90% confidence interval for the population portion . Fill in the blanks. Round answers to 2 decimal places.

C=

N=

X=

P=

interval (_____,______)

Math   Statistics-And-Probability   
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Answer #1

C (Confidence Level): 90%

N = 2241

X = 650

P = 650/2241 = 0.29

The formula for calculating Confidence Interval for the proportion

Here in our case, = P = 0.29

n = N = 2241

zc = Critical value = 1.645

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