Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a margin of error of 4 percentage points and use a confidence level of 95​%.

Q: One sample of scores has a mean of M = 45 and a sample size of n = 10 scores.  A second sample of…

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

A: Option A is correct

Q: Use the formula in this example to determine the sample size, n. The estimated prevalence is 16%,…

A: Given that  p=16%=0.16 , Margin of error=E=5%=0.05 91% confidence level

Q: se the confidence interval to find the margin of error and the sample mean.   (0.656,0.800)…

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

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Q: ​(Round to three decimal places as​ needed.) Part 2 ​b) Identify the value of the margin of error E.…

A: We have given that,  X = 594 and n = 919  Then,  We will find the point estimate of p and margin of…

Q: Suppose you select a random sample of N=81, and find X = 50, and s = 9.9. Determine the 99%…

A: Given Mean=50 Standard deviations=9.9 n=81

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

A:

Q: A researcher wants to estimate the proportion of electric car owners in Los Angeles County. The…

A: According to the given information, we havePopulation proportion, p = 10% = 0.10Margin of error, E =…

Q: 405 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E=D…

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Q: Use the confidence interval to find the margin of error and the sample mean.   (0.056,0.180)…

A: Given confidence interval  (0.056,0.180) calculate Margin of error and sample mean

Q: tổ complete parts (a) through (d). A research institute poll asked respondents if they felt…

A: List of formula : a)  The best point estimate of the population proportion (p) is sample proportion…

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

A: Step 1: Given informationConfidence level, c = 0.90Margin of error, E = 0.05 Step 2: Part (a)The…

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

A: p^=Xn X=593,n=1025 Zcritical=Zα/2=1.65 at α=0.10(1-α)% CI for p…

Q: A researcher is interested to find out the proportion of registered nurses in Manitoba who are more…

A: Given that the sample of 89 from the records of members of Manitoba Nursing Association and she…

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

A: It is given that sample size (n) is 986 and x is 522.

Q: Use the sample data and confidence level given below to complete parts  (b)   A research institute…

A: Margin of error can be calculated as shown below.

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

A: Given data, n=1008 x=588 point estimate(p)=?

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

A: Solution: a. From the given information, n=2419 and X=1183.

Q: Emilio wants to estimate the percentage of people who have a financial adviser. He surveys 350…

A: given data  n = 350 x = 76 we have to interprete 99% confidence intervl.

Q: Use the confidence interval to find the margin of error and the sample mean. (0.278,0.400) The…

A: We have given the confidence interval(0.278, 0.400)Lower limit = 0.278Upper limit = 0.400

Q: Find the sample size of American adults you would need to predict the results of an election with a…

A: Given thatMargin of error (E) = 0.02 Confidence level (c) = 90% = 0.90Significance level (α) = 1 -…

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

A:

Q: How many people should be surveyed to construct a 95% confidence interval with error = 3% to…

A: Given that Margin of error, E = 0.03 Population proportion, p = 0.15 Level of confidence = 95%

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

A: According to the given information in this question  There are more than three subparts according to…

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

A: Given that  Sample size n=1002 and Favorable case x=585

Q: Use the confidence interval to find the margin of error and the sample mean.   (0.676,0.800)

A: The margin of error is the most common term which we use in a confidence interval. It is the degree…

Q: According the April 12, 2017 Pew Research survey, 58% of Americans approve of U.S. missile strikes…

A: (3) Determine whether the normal approximation can be used with the given distribution or not?…

Q: Angela is trying to figure out the sample size for the data set she wants to collect. She is…

A: The larger the sample size, the less will be the value of standard error. Therefore, the range of…

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: se the formula in this example to determine the sample size, n. The estimated prevalence is 19%,…

A: Given that,

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

A: Solution: From the given information, x=548 and n=931.

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

A: