Out of 400 people sampled, 176 had children. Based on this, construct a 99% confidence interval for the true population proportion of people with children. Preliminary: Is it safe to assume that n≤5% of all people with children? No Yes Verify nˆp(1−ˆp)≥10. Round your answer to one decimal place.  nˆp(1−ˆp)=

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Q: Out of 600 people sampled, 402 had kids. Based on this, construct a 90% confidence interval for the…

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: Given : n = 100 x = 67 Confidence level = 90%

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 300…

A: Given , n = 300 ,  x = 189

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 300…

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Q: Out of 600 people sampled, 78 had children. Based on this, construct a 90% confidence interval for…

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 400…

A: Given that,   The sample proportion is, Critical values: By using the standard normal table of Z,…

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A: Given,x1 = 397, n1 = 537x2 = 449, n2 = 552Confidence level, C = 90%

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 400…

A: Given information Total adults (n) = 400 No of adults having kids(x) =44

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A: Given95% confidence interval N=361 x = 59.1 seconds. z= 4.9 SecondsFind the margin of error?

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 300…

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Q: Use the given confidence interval to find the margin of error and the sample mean. (73.5,86.1) The…

A: Given,   Lower bound = 73.5​ Upper bound = 86.1   The objective is to find the margin of error and…

Q: For each confidence interval procedure, provide the confidence level. (Round the answers to the…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

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Q: Translate the statement into a confidence interval. Approximate the level of confidence. Next…

A: From the provided information, Sample size (n) = 1059 Sample proportion (p̂) = 0.77 Margin of error…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: Solution a)  0.156<p<0.324 b)  p=0.240±0.084

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Givenn=600x=276p^=xn=276600=0.46confidence interval = 95%

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Number of adult residents (n) = 600 Number of adults that has kids (x) = 102 Find z-critical value:…

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Q: Out of 100 people sampled, 88 had children. Based on this, construct a 90% confidence interval for…

A: Givenx=88n=100p^=xn=88100=0.88

Q: Use the given confidence interval to find the margin of error and the sample mean. (3.95,6.31) The…

A: Given confidence interval is (3.95,6.31)

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: Given data, n=100 x=72 p=xn=72100=0.72z-value at 90% CI is Zc=1.645