Assume that a sample is used to estimate a population proportion p. Find the 99.9% confidence interval for a sample of size 201 with 78% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =

In a survey of 2345 ​adults, 729 say they believe in UFOs.   Construct a 90 % confidence interval for the population proportion of adults who believe in UFOs.   A 90%confidence interval for the population proportion is ​ ​(Round to three decimal places as​ needed.)   Interpret your results. Choose the correct answer below.     A. With 90​% ​confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.   B. With 90​% ​probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval.   C. The endpoints of the given confidence interval shows that 90​% of adults believe in UFOs.   D. With 90% ​confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.

Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a sample of size 257 with 50% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =

Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample of size 324 with 230 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 99.5% C.I. =

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 331 with 182 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =

Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 309 with 71 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. =

A 95% confidence interval for a population proportion, p, is 0.23 < p < 0.27. What was the sample proportion?

Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 1004 and x = 575 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. .... a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)

A survey of 41 students in grades 4 through 12 found 63% have classroom Wi-Fi access. Find the 99% confidence interval of the population proportion. .