1.We wish to estimate what percent of adult residents in a certain county are parents. Out of 500 adult residents sampled, 320 had kids. Based on this, construct a 95% confidence interval for the proportion

of adult residents who are parents in this county.

Give your answers as decimals, to three places.

_____<<____

2.For a hypothesis test, alpha = 0.05

The computed P-Value = 0.056

Should H0 be rejected?:

• Fail to Reject H_0
• Reject H_0

What is the correct conclusion?

• There is NOT sufficient evidence to reject the Null Hypothesis and accept the alternative.
• There IS sufficient evidence to reject the Null Hypothesis and accept the alternative.

3.Testing:

H0:p=0.65

H1:p>0.65

Your sample consists of 116 subjects, with 70 successes. Calculate the test statistic, rounded to 2 decimal places

z=_____