In a sample of 190 adults, 120 had children. Construct a 99% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three places 0.542

Q: If n=380 and p^(p-hat) =0.12, find the margin of error at a 95% confidence level Give your answer…

A: Given data: n = 380  p^(p-hat) =0.12, To find : The margin of error at a 95% confidence level

Q: Out of a sample of 600 adults aged 18 to 30, 162 still lived with their parents. Based on this,…

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Q: A researcher wants to construct a 95% confidence interval for the proportion of elementary school…

A: Margin of error = 0.07 Population proportion = 0.60 95% confidence level

Q: If n=340 and p (p-hat) = 0.58, construct a 95% confidence interval. Give your answers to three…

A: From the provided information, Sample size (n) = 340 Sample proportion (p̂) = 0.58 Confidence level…

Q: Strictly speaking, what is the best interpretation of a 95% confidence interval for the mean? If…

A: In general, the 95% confidence interval interprets that there is 95% confidence that the population…

Q: In another pre-election poll, a pollster finds that 438 out of 600 people polled favor, Smith.…

A: Given, X = 438 N = 600 The sample proportion is given by:

Q: Out of 100 people sampled, 16 have tried marijuana. Based on this, construct a 95% confidence…

A: Obtain the 95% confidence interval for the true population proportion of people who have tried…

Q: From a simple random sample of 400 of the 1,395 colleges in our population, it was found that…

A: Given : 1395 colleges in our population  Population Size (N) = 1395 400 colleges selected randomly…

Q: A polling agency reported that 66 percent of adults living in the United States were satisfied with…

A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: When a survey asked subjects whether they would be willing to accept cuts in their standard of…

A: It is given that 362 out of 1,180 subjects respond yes.The sample proportion is 362/1,180 =…

Q: Two random samples have sizes of 50 and 25. Which of the following is true for a 99% confidence…

A: Given that  Random sample sizes (n1) = 50  and (n2) = 25 Confidence level (C) = 99%    We know that…

Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. %3D…

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Q: Of 118 randomly selected adults, 34 were found to have high blood pressure. Construct a 95%…

A: According to the given information, we have Total number of adults = 118 34 were found to have high…

Q: In a sample of 100,40 said they preferred Pepsi to Coke. A 95% confidence interval for the…

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Q: A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the…

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

Q: In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that…

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Q: For a single sample of n = 16 scores, the tabled t values used to determine the 99 percent…

A: Given: n = 16 Confidence Interval = 99% α=1-0.99=0.01α2=0.012=0.005 Degrees of freedom:…

Q: Suppose you calculate a 99% confidence interval to be: 13.05 to 20.75. Determine the margin of error

A: Given data: The given upper limit is b=20.75. The given lower limit is a=13.05.   The expression for…

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

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Q: In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that…

A: Given that Sample size n= 500  Favorable cases x=160 Sample proportion p^=x/n

Q: In a sample of 100, 40 said they preferred Pepsi to coke. A 95% confidence interval for the…

A:

Q: If n-19, ž(x-bar)-43, and s-8, construct a confidence interval at a 90% confidence level. Assume the…

A: Given: n = 19, x¯ = 43, s = 8 Confidence level = 90%

Q: Suppose that you will be taking a random sample from a population and that you intend to find a 95%…

A: Solution: The confidence interval for the population mean is calculated by using the following…

Q: A survey found that out of 900 workers, 150 said they were interrupted by frank phone calls. Find…

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Q: Find the 68% confidence interval for the percentage of leaky diapers with a sample of 100 diapers…

A: Let X be the number of defective diapers and n is the number of diapers. From the given information,…

Q: If n=360 and p (p-hat) =0.29, find the margin of error at a 95% confidence level Give your answer to…

A: Given that : Sample size (n) = 360 P(hat) = 0.29 Confidence interval is 95%  We use here, Margin of…

Q: If n=210 and ˆpp^ (p-hat) =0.86, find the margin of error at a 90% confidence level Give your…

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Q: 1. A poll of 2,500 people shows that 50% approve of a smoking ban in bars and restaurants. What is…

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Q: If n = 560 and ˆpp^ (p-hat) = 0.25, construct a 99% confidence interval.

A: Calculations: x=140 and N= 560

Q: If n=140 and ˆpp^ (p-hat) =0.15, find the margin of error at a 90% confidence level Give your…

A: Given, n = 140 p^ = 0.15

Q: If n=380 and p (p-hat) =0.52, find the margin of error at a 95% confidence level Give your answer to…

A: Dear student, If you find this solution helpful please upvote ? it. The solution is given below:

Q: determine the 95% confidence interval or range in an observed score of 86 if SD is 5.8 and the…

A: 95% Confidence interval is 79.4934 and 92.5066 Explanation: Data given, r=0.82 X=86 SD=5.8 Standard…

Q: If n=270 and p (p-hat) =0.93, find the margin of error at a 90% confidence level Give your answer to…

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Q: 9. A survey found that out of 900 workers, 150 said they were interrupted by frank phone calls. Find…

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Q: In a sample of 1901 patients who underwent a certain type of surgery, 22% experienced complications.…

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Q: If n=280 and ˆpp^ = 0.15, construct a 90% confidence interval. Give your anwers to three decimals.

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Q: If n=530 and ˆpp^ (p-hat) =0.51, find the margin of error at a 90% confidence level Give your…

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Q: In a sample of 900 people, 378 say they snooze the alarm more than once in the morning. Find a 95%…

A: Given,   The sample proportion is,

Q: A survey of 503 women shoppers found that 46% of them shop on impulse. What is the 99% confidence…

A: Given : Sample Size, n = 503 confidence level,c=0.99

Q: If n=350 and ˆpp^ (p-hat) =0.64, find the margin of error at a 90% confidence level Give your…

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

Q: A health professional takes the temperatures of 5 patients:   99.8    98.3    96.9    98.0    98.3…

A: We have given that  A health professional takes the temperatures of 5 patients: 99.8    98.3    96.9…

Q: In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the…

A: We need to construct the 95% confidence interval for the population proportion. We have given the…

Q: Identify the t- scores for a 99% confidence interval if the sample size is 70?

A: We have to find critical value.

Q: If n = 460 and ˆpp^ (p-hat) = 0.4, construct a 95% confidence interval in excel. Give your answers…

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Q: If n=200 and ˆpp^ (p-hat) =0.16, find the margin of error at a 95% confidence level Give your…

A: Given Information

Q: Based upon the results of the sample in #1, can you say with 95% confidence that your confidence…

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Q: For a sample with a mean of 10, a std of 5 and an n of 30, what is the lower bound of the 95%…

A: Given data, x=10σ=5n=30z-value at 95% confidence is Zc=1.96

Q: If n=130 and ˆpp^ (p-hat) =0.19, find the margin of error at a 95% confidence level Give your…

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Q: Suppose you calculate a 99% confidence interval of 14.71 to 21.64. Determine the margin of error.

A: Given information- We have given a value of 99% confidence interval is- C.I = (14.71, 21.64) Lower…

Q: A survey found that out of 800 workers, 150 said they were interrupted by frank phone calls. Find…

A: Given,n=800x=150p^=xnp^=150800=0.18751-p^=1-0.1875=0.8125α=1-0.95=0.05α2=0.025Z0.025=1.96