c. Find the confidence interval for the population mean with confidence level of 99%

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Given, Lower bound = 18  upper bound = 26

Q: If a 92% Confidence Interval for the Population Mean is (67.8, 78.9), find its Margin of Error.

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Q: Pulse Rates: Pulse rate is an important measure of fitness of a person's cardiovascular system. The…

A: Given that Sample size(n)=21 Sample mean x̄=53.6 Sample standard deviation(s) =3.23  We have to find…

Q: Determine the level of confidence in the preparation of the population mean confidence interval if…

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Q: Construct the indicated confidence interval for the difference between population proportions p1 -…

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Q: Construct the indicated confidence interval for the population mean using the t-distribution. Assume…

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Q: find the margin of error for a sample mean, given n=16, s=4, Xbar=17. for a 95% confidence interval.

A: The margin of error for sample mean is given by,

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Given: Lower bound = 19 Upper bound = 27 Formula Used: Margin of error = Upper bound - Lower bound2…

Q: When calculating the confidence interval for a population mean, which distribution is used?

A: Confidence interval for mean: When the sample size is large (n>30) and population variance (or…

Q: Assuming that the population is normally distributed, construct a 95% confidence interval estimate…

A: The question is about confidence intervalGiven :To find :1 ) 95 % CI estimate for the popl. mean…

Q: In a random sample of nine people, the mean driving distance to work was 25 miles the sample…

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Q: The population mean of a set of data is unknown. The sample mean is 44, and the error bound for the…

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Q: A sample of 25 observations is taken from a normal distribution with unknown mean. The sample mean…

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Q: Find the critical t value to use in making a 98% confidence interval for a mean if the sample size…

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Q: pharmaceutical company wanted to estimate the population mean of monthly sales for their 250 sales…

A: Sample size n=40Sample mean=10000Standard deviation=1000

Q: Find the critical value zc that corresponds to a 98% confidence level

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Q: (ii) Let (a, b) be the 95 confidence interval for the population mean u. Find the values of a and b.

A: Givenstandard deviation(σ)=1sample size(n)=16Mean(x)=7.3

Q: A researcher wants to make a ninety-five percent confidence interval for the population mean. She…

A: From the given information,Margin of error , E = 0.56 Population variance, 7.6 Using formula ,

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: Determine the point estimate of the population mean and margin of error for the confidence interval…

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Q: Construct the confidence interval for the population mean  c=0.95, x=8.7 standard deviation=0.8 and…

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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: Construct the indicated confidence interval for the difference between population proportions…

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Q: In constructing a confidence interval for the population mean, the z-distribution should always be…

A: Followings are the explanation of the question 1) When the sample size is large ( more than 30 ) it…

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Lower bound=15, Upper bound=27

Q: Construct a 90​% confidence interval of the population proportion using the given information.…

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Q: Determine the point estimate of the population proportion, the margin of error for the following…

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Q: Find a Confidence interval for the true Population Proportions if n = 30,        x = 75, and the…

A: From the given information, X=75 and n=30.

Q: Construct a 90% confidence interval for the mean when x̅=50 and there are 31 observations. Suppose…

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Q: Calculate the 95% confidence interval and the 99% confidence interval for a sample of 81 where the…

A: Given : Sample Size, n = 81 Sample Mean, x̄ = 50 sample standard…