Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval for a sample of size 310 with 233 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 99% C.I. =

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

A: sample size(n)=515sample proportion=0.20Confidence level=95%

Q: Find the sample size need to find the Population Mean if the margin of error is $105, the confidence…

A: Solution: From the given information, confidence level is 0.95, σ=315 and E=105.

Q: Use the given confidence interval to find the margin of error and the sample mean. .734, .760

A: From the given information, the confidence interval is (0.734, 0.760). It can be expressed in,

Q: Calculate the lower 95% confidence interval for the population mean. (round to the nearest tenth)…

A: given data n = 31σ2 = 15∴σ = 15 = 3.873x¯ = 5695% ci for μ = ?

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: Given: n= 1031 ,x= 545 need to find point estimation for p.

Q: Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval…

A:

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

A:

Q: Suppose the 95% confidence interval for a population mean is (20.5, 35.5). What is the margin of…

A:

Q: poofy Marketing Solutions conducted a survey among 16 randomly selected visitors p the newly opened…

A: Solution: Given information: n= 16 Sample size  Degree of freedom =n-1= 15  x= 67 Sample means =…

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

A: Given that n=sample size=800p=probability of success=40%=0.40z= critical value for 98% confidence…

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

A:

Q: C6. The GSS 2014 asked respondents to identify what was important for "truly being American." When…

A:

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

A:

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

A: Given that: The sample size is n=118. The sample proportion is p^=0.69. The confidence level is 95%.…

Q: Suppose the 90% confidence interval for a population mean is (20, 55). What is the point estimate…

A:

Q: Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval…

A: It is given that sample size (n) is 288 and p-hat value is 0.389.

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Margin of error (E) for proportion is defined as below                                E = Width2…

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: Construct the confidence interval for the population mean y. C= 0.90, x=16.6, o= 10.0, and n= 80

A: Here, C=0.90, x=16.6, σ=10.0, and n=80.

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

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

Q: Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval…

A:

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

A:

Q: Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval…

A: Solution-: Given: n=130, x=73, c=0.98 Our aim to find 98% C.I. for the population proportion.

Q: A confidence interval was constructed to approximate a population proportion. The interval was from…

A: We have given that,  Let p̂ represents the sample proportion and E represents the margin of error,…

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

A: Givensample size(n)=325x=54.2p^=xn=54.2325=0.1668confidence level = 95%

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

A:

Q: Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the…

A: Level of significance ɑ=0.25

Q: In a survey of 2009 adults in a recent year, 1263 say they have made a New Year's resolution.…

A:

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

A: Here, given that probability of success is 78% and sample of size is 114. We will find 95%…

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

A: Given data,n=258x=115Find the 95% confidence interval

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 margin of error M.E.…

A: Solution: Given information: n= 220 Sample size  x= 110 successes  p^=xn=110220= 0.5 Sample…

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

A: The question is about confidence interval.Given :No. of selected observations ( n ) = 1400Sample…

Q: /hat is the 95% confidence interval for this sample mean? to 82.0 to 67.4 to 82.9 to 67.6

A: As the population standard deviation is known, we will use z distribution. The critical value z at…

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

A: Given data The sample size is n=300. The number of successes is x=189. The confidence level is…

Q: A confidence interval was constructed to approximate a population proportion. The interval was from…

A: Given Data Lower limit,LL = 12.5 upper limit,UL = 18.5

Q: 20. Suppose a 90% confidence interval is stated as (0.3011, 0.4189). What is the sample proportion…

A: The given 90% confidence interval for population proportion is, (0.3011, 0.4189) The upper limit is,…

Q: Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval…

A: A random sample of size 293 with 103 successes; n=293 x=103 α=0.10

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

A:

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

A: It is given that, 88% of the 210 samples lead to success. Thus, the sample size n = 210 and the…

Q: Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval…

A: According to the provided information,

Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A:

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Confidence interval=(0.729​,0.755​) Find margin of error=E