Question
Asked Nov 15, 2019
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If n = 550 and X = 440, construct a 90% confidence interval for the population proportion, p.

Give your answers to three decimals

< p <

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Expert Answer

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Step 1

Given information:

Total number of trials (n) = 550

Number of success (X) = 440

Confidence level = 0.90

Step 2

Let X is number of success.

Level of significance = 1- Confidence level

                                   = 1-0.90

                                   =0.10

Step 3

Now, the Z-critical value from the standard normal distribution table i...

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