For a sampling distribution of n = 500 and population proportion of 0.48 of those who prefer cookies for dessert. Find the 95% confidence interval.

Q: Use the confidence interval to find the margin of error and the sample mean. (0.558,0.740)

A: Given: confidence interval ( 0.558 , 0.74 ) Need to find sample mean(x̄) and margin of error(ME) .

Q: Use the Student's t distribution to find t, for a 0.95 confidence level when the sample is 27.

A: sample size=n=27 Degree of Freedom=n-1=27-1 =26 Confidence level is 0.95 Therefore the Level of…

Q: If n=400 and X=100​, construct a 95​% confidence interval estimate for the population proportion.

A: Given,x=100n=400sample…

Q: If we want a 95% confidence interval for proportion within 3% how large a sample do we need?

A: It is given that margin of error (E) is 0.03 and the confidence level is 0.95.

Q: Find the sample size needed if a 98% confidence interval has a 'margin of error' of 4% if .. a) You…

A: From the provided information, Margin of error (E) = 0.04 Confidence level = 98% The z value at 98%…

Q: If you need to make a 98% confidence interval for a proportion, and the margin of error is to be no…

A: Given information:  Confidence level = 98% Margin of error (e) = 0.025 Let proportion (p) = 0.5 The…

Q: Find the margin of error E that corresponds to the given statistics and confidence level.…

A: From the provided information, Confidence level = 98% Sample size (n) = 900 Success (p̂) = 0.40

Q: Decreasing the sample size, while holding the confidence level the same, will do what to the length…

A: Introduction: Confidence interval is the interval estimate of the population parameter. It is the…

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

A: Given Data: p^=0.48   n=500   z-value corresponding to 99% Confidence Interval=2.576

Q: In a survey, the planning value for the population proportion is p*=0.25 . How large a sample should…

A: Sample size: The sample size for a desired confidence level, α with a given margin of error, E is…

Q: In a survey, the planning value for the population proportion is .25. How large a sample should be…

A: Solution: It is given that the planning value for the population proportion is 0.25. The confidence…

Q: Kim wants to determine a 80 percent confidence interval for the true proportion of high school…

A: Given: Margin of error, E=0.04 Confidence level=80%

Q: The confidence interval for a population porportion is (0.34, 0.5). What the the sample proportion…

A: Given  The confidence interval for a population proportion (0.34,0.5)  estimate the sample…

Q: In a survey, a random sample of teenagers were asked whether they have a sibling. The resulting…

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Q: T.J. wants to estimate the percentage of college students who have taken out student loans. He…

A:

Q: Construct a 95​% confidence interval to estimate the population mean when x=133 and s​ = 35 for…

A:

Q: If [330, 610] is a confidence interval for the population mean. Find the margin of eror. Select one:…

A: The upper limit of the confidence interval is (U) = 610 The lower limit of the confidence interval…

Q: Determine the margin of error for the confidence interval for the proportion: 0.557 < μ< 0.837 The…

A: It is given that the confidence interval for proportion is as follows: 0.557 &lt; µ &lt; 0.837.

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: According to the provided information: The proportion can be calculated as:

Q: In a survey, the planning value for the population proportion is p* =0.25 . How large a sample…

A: Given: p* = 0.25α=0.05MOE=0.09

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

A: According to the given information, we have Confidence interval = (0.690, 0.718)

Q: kendall wants to estimate the percentage of vegetarians who are also vegan. She surveys 150…

A: The margin of error for the 95% confidence interval of population proportion is given as follows :…

Q: In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing “strong…

A: Given information- We have given that 93 of the 300 subjects reported experiencing “strong or…

Q: How large is the sample if the confidence level is 97%, Ɛ = 2.5%  and ρ = .35?

A:

Q: In a survey, the planning value for the population proportion is p* = 0.25. How large a sample…

A:

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: the sample proportion of females is  x=118  n=164 P = .720  #1 Make a 95% confidence interval for…

A:

Q: Determine the margin of error for the confidence interval for the proportion: 0.575 <p<0.722

A:

Q: In June 2020, a Gallup Poll asked U.S. adults whether immigration was a good thing or a bad thing…

A: Given X=600 n=1000

Q: If X=72​, σ=13​, and n=66​, construct a 95​% confidence interval estimate of the population​…

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Q: answer

A: Given: Population proportion, p = 0.25 Margin of error, E = 0.06 Confidence interval = 95% Then, by…

Q: Which distribution (z or t) should you use to construct a confidence interval and why? Construct a…

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

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: It is given that n=195 and x=162. The sample proportion is 162/195 = 0.8308 The sample size is 195…

Q: Assume that a sample is being used to estimate a population mean μμ. If n = 19, x¯ = 43, and s = 3,…

A:

Q: Use the Student's t distribution to find te for a 0.95 confidence level when the sample is 29. Step…

A: Given that the sample size is 29 and the confidence level is 0.95. That is, c=0.95 and n=29…

Q: Find the level of a two-sided confidence interval for t = 2.776 with sample size 5. Express the…

A: According to the provided information, sample size (n) = 5 The degrees of freedom is: df =n-1 = 5-1…

Q: find the t/α2 value for a 95% confidence interval for the mean when the sample size is 10

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Q: Use the given confidence interval to find the margin of error and the sample mean.  (4.81, 8.09)

A: The confidence interval is given by (4.81, 8.09)

Q: In a survey conducted by CNN, 130 of the 250 people that were randomly surveyed have a savings…

A: Given data, n=250 x=130 Sample proportion p=x/n =130/250=0.52 z-value at 90% confidence is Zc=1.645

Q: Find the confidence level and a for an 88% confidence interval.

A: Here use confidence level and significance level as alternative of each other

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

A: Given n=329 X=39

Q: Use the confidence interval to find the margin of error and the sample mean.   (.364,0.500)

A:

Q: A confidence interval for a population proportion p is 0.635 to 0.700. What is the margin of error?

A: We have given that confidence interval for a population proportion p is 0.635 to 0.700.

Q: If X=68​, σ=14​, and n=66​, construct a 95​% confidence interval estimate of the population​ mean, μ

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Q: ation, contruct a 90% confidence interval for the true

A: The value of z at a 90% confidence level is 1.645, which can be obtained by using the standard…

Q: find the t/α2 value for an 80% confidence interval for the mean when the sample size is 14

A:

Q: In a survey, the planning value for the population proportion is p* = 0.25. How large a sample…

A: Given,sample proportion(p*)=0.25margin of error(E)=0.08α=1-0.95=0.05α2=0.025Z0.025=1.96   (from…

Q: Find the confidence level and α for an 80​% confidence interval.

A: Given confidence level =80%

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Given data, n=195 x=126 p=x/n=126/195=0.646   z-value at 95% confidence is Zc=1.96

Q: In a survey, the planning value for the population proportion is p* = 0.35. How large a sample…

A: Find z-critical value. Refer Standard normal table/Z-table OR use excel function…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.