11. The lower limit of a 95% confidence interval for the population proportion P given a...

11. The lower limit of a 95% confidence interval for the population proportion P given a sample size n = 100 and sample proportion P̂ = 0.62 is equal to: Show your calculations. Show your calculations.

A. 0.699

B. 0.525

C. 0.440

D. 0.715

12. The 95% confidence interval for the population proportion P, given a sample size n = 2200 and sample proportion P̂ = 0.214 is computed as: Show your calculations. Show your calculations.

A. 0.214 ± 0.017

B. 0.214 ± 0.086

C. 0.214 ± 0.048

D. 0.214 ± 0.069

Solutions

Expert Solution

Solution:

1) 95% lower confidence interval is 0.525

2) 95% Confidence interval is: 0.214 ± 0.017

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A 95% confidence interval estimate of the population proportion p is .405<p<.455 a. What is the...

A 95% confidence interval estimate of the population proportion p is .405<p<.455 a. What is the confidence interval? b. what is a? c. What is the critical value? d. what is the point estimate? e.What is the margin of error?

At a confidence level of 95% a confidence interval for a population proportion is determined to...

At a confidence level of 95% a confidence interval for a population proportion is determined to be 0.65 to 0.75. If the sample size had been larger and the estimate of the population proportion the same, this 95% confidence interval estimate as compared to the first interval estimate would be A. the same B. narrower C. wider

Construct a 95% confidence interval to estimate the population proportion with a sample proportion equal to...

Construct a 95% confidence interval to estimate the population proportion with a sample proportion equal to 0.45 and a sample size equal to 120. ----- A 95% confidence interval estimates that the population proportion is between a lower limit of ___ and an upper limit of ___ ????

1 - A 95% confidence interval for a population proportion was constructed using a sample proportion...

1 - A 95% confidence interval for a population proportion was constructed using a sample proportion from a random sample. Which of the following statements are correct? Select all that apply. A) We don't know if the 95% confidence interval actually does or doesn't contain the population proportion. B) The population proportion must lie in the 95% confidence interval. C) There is a 95% chance that the 95% confidence interval actually contains the population proportion. D) The sample proportion must...

QUESTION 10 What is the 95% confidence interval for the proportion of smokers in the population...

QUESTION 10 What is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)? QUESTION 8 Question 8-10 are based on the following information: The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the proportion who smoke of .35. How large a sample...

Determine the margin of error for a 95% confidence interval to estimate the population proportion with...

Determine the margin of error for a 95% confidence interval to estimate the population proportion with a sample proportion equal to 0.70 for the following sample sizes. a. nequals100 b. nequals200 c. nequals250 LOADING... Click the icon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. a. The margin of error for a 95% confidence interval to estimate the population proportion with a sample proportion equal to 0.70 and sample size nequals100 is nothing. (Round...

Find the margin of error for the 95% confidence interval used to estimate the population proportion.

Suppose that you want a 95% confidence interval to estimate the population proportion of households that...

Suppose that you want a 95% confidence interval to estimate the population proportion of households that have a dog in a certain city. Out of a sample of 300 households, 108 have a dog. a. What is x and what is n? n=300 x=108 b. What is the sample proportion? 108/300 c. To get the confidence interval, which procedure would you use on your calculator? Just tell me what you would pick from the stat, TESTS menu. 1PropZint d. The...

Construct a confidence interval of the population proportion at the given level of confidence. x equals...

Construct a confidence interval of the population proportion at the given level of confidence. x equals x= 120 120, n equals n= 1100 1100, 90 90% confidence

Construct a confidence interval of the population proportion at the given level of confidence. x =75,...

Construct a confidence interval of the population proportion at the given level of confidence. x =75, n = 150 , 90 % confidence.

Subjects