Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 388 with 171 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 95% C.I. =

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

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Q: Suppose a 95% confidence interval for a population proportion is found using the theory-based…

A: given data  95% ci for p  using theory based method. what it contains defenately from given options?…

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: Use the given data to construct a 98%confidence interval for the population proportion p x = 52 , n…

A: We have given that,  Favorable cases (X) = 52 and sample size (n) = 69 Then,  We will find the 98%…

Q: If n 20, 40, and s 20, construct a confidence interval at a 90% confidence level. Assume the data…

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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: For a sampling distribution of n = 1500 and population proportion of 0.42 of those who prefer…

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Q: If n-25, -46, and s-5, construct a confidence interval at a 95% confidence level. Assume the data…

A: Givenn=25x=46s=5confidence level = 95%

Q: Find the indicated margin of error. Out of 260 trials, 150 turned out positive. Find the margin of…

A: It is given that the sample size (n) is 260 and the number of positive trials (x) is 150.

Q: Find the indicated margin of error. Out of 330 trials, 150 turned out positive. Find the margin of…

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Q: d. FIND t a n = 10 for the 90% confidence interval for the mean. %3D

A: d. Given: n=10 α=0.1 The degrees of freedom is obtained as below: df=n-1=10-1=9 Critical value: The…

Q: How many 3 digit even numbers can be created if repetition of digits is allowed

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Q: In a survey of 2263 adults, 742 say they believe in UFOS. Construct a 95% confidence interval for…

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

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Q: if ue want a 96%. confidence nterval on populatron mean with a sample size of a3, find or 土

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

A: a.The confidence level and α for a 90% confidence interval is obtained below:The confidence level is…

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

A: Givensample size(n)=565sample proportion(p^)=0.2α=1-0.95=0.05α2=0.025zc=zα2=z0.025=1.96   (from z…

Q: 32 students from Batangas National High school shows a mean IQ of 111 while 30 students from…

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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: Determine the minimum sample size needed if we want to estimate the population percent of students…

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

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Q: If X 121, o =27, and n 38, construct a 95% confidence interval estimate of the population mean, u.…

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Q: If n=27, x=48, and s-6, construct a confidence interval at a 80% confidence level. Assume the data…

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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: . A survey of folk music fans yields this 95% confidence interval estimate of the proportion of fans…

A: The 95% confidence interval for proportion of fans who love music of David Wilcox is 0.74 to 0.86

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 being used to estimate a population mean μμ. If n = 29, x¯ = 46, and s =…

A: From the provided information, Sample size (n) = 29 Sample mean (x̅) = 46 Sample standard deviation…

Q: Out of 600 people sampled, 534 had kids. Based on this, construct a 95% confidence interval for the…

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

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

Q: Determine tc for n = 15 and a confidence level of 99%.

A: From the given information, Sample size (n) =15, Confidence level (1-α)= 0.99 Thus, the t-critical…

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: For a sampling distribution of n = 800 and population proportion of 0.42 of those who prefer cookies…

A: We have find distribution...

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

A: n = 500 p = 0.48

Q: In a survey of 2000 adults in a recent year, 713 made a New Year's resolution to eat healthier.…

A: We have given that  Sample size n= 2000 Favorable cases x = 713 Sample proportion p^=x/n

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

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Q: and X = 96, construct a 90% confidence interval for the population proportion, p. Give your answers…

A: Given X=96 N=120

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: 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: It is desired to estimate the proportion of cannabis users at a university. What is the sample size…

A: Here, CL=0.95 and E=0.10.

Q: Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she…

A: From the provided information, The data values are as follow: 9, 12, 13, 10 and 10 Sample size (n) =…