Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 300 with 189 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 80% C.I. =

Q: n = 260 and X = 208, construct a 90% confidence interval for the population proportion, p. Give…

A: Given data,x=208n=260p^=xn=208260=45=0.80

Q: Find z, for the 84% confidence interval for the population mean. O a. 0.7955 O b. 1.44 O c. None O…

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Q: Assume you select an SRS of size 94 and give them a test. You calculate the mean test score in your…

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Q: Determine the sample size for the estimate of u if the margin of error E= 0.10, o=0.85, and the…

A: Given,Margin of error, E = 0.10Population standard deviation, σ = 0.85Confidence level, C = 99% =…

Q: For a sampling distribution of n = 500 and population proportion of 0.48 of those who prefer cookies…

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Q: Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval…

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Q: Suppose you want to construct a confidence interval with a margin of error of 0.03 (3%). Find the…

A: The formula for calculating sample size is, n = z2*p^(1-p^)MOE2 Where, z is the z score (default…

Q: Assume that population mean is to be estimated from the sample described. Use the sample results to…

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

Q: The estimated prevalence is 11%, and the desired confidence level is 91% with a margin of error of…

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Q: Thirty randomly selected students took the calculus final. If the sample mean was 74.2 and the…

A: From the provided information, Sample size (n) = 30 Sample mean (x̅) = 74.2 Standard deviation (s) =…

Q: Construct the confidence interval for the population mean . C=0.98, x=15.3, = 10.0, and n=75

A: The Confidence Interval formula is X  ±  Z s √(n) Where: X is the mean Z is the Z-value…

Q: A statistics practitioner took a random sample of 55 observations from a population whose standard…

A: It is given that, Sample mean = 104. Population standard deviation, sigma is 31. The sample size, n…

Q: Construct a confidence interval of the population proportion at the given level of confidence. X =…

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Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given,   Lower bound = 0.39​ Upper bound = 0.78   Here, we use to determine the margin of error.

Q: Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval…

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Q: assume that a sample is used to estimate a population proportion p. find the margin of error E that…

A: The confidence level is 0.02.

Q: A statistics practitioner took a random sample of 47 observations from a population whose standard…

A: From the given information, it is clear that,  Sample mean X=99 Population standard deviation σ=27…

Q: Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E.…

A: From the provided information, Sample size (n) = 353 Number of success (x) = 148 The sample…

Q: In a survey of 2295 ​adults, 746 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Given Data Sample Size, n = 992 Number of successes, x = 581.0 confidence level,c=…

Q: In a survey of 6700 T.V. viewers, 3350 said they watch network news programs. Find the margin of…

A: n = 6700 x = 3350  p̂ = x/n = 3350/6700 = 0.50Confidence level (c) = 99% = 0.99Significance level…

Q: Find the sample size need to find the Population Proportion if the margin of error is 4%, the…

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Q: A random sample of 12 cats was collected to study the lifespan with the data listed below. Find the…

A: It is assumed that is the population mean of lifespan of cats.The sample size is .Data of lifespan…

Q: assume that a sample is used to estimate a population proportion p. find the margin of error E that…

A: Sample size = n = 730 Sample proportion = p̂ = 0.3

Q: Find the confidence level and α for a. a 90% confidence interval. b. a 99% confidence interval.

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Q: t the confidence interval for the population mean. C=0.98, x=6.6, =0.8, and n=5

A: As the population standard deviation is known, we will use z distribution. At 98% confidence level,…

Q: Researchers studied the mean egg length (in millimeters) for a bird population. After taking a…

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Q: You are a researcher studying the antler size of male Alaskan Moose in a certain Alaska location.…

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