To estimate the proportion of smoker a sample of 100 men was selected. In the selected sample, 40 men were smoker. Determine a 95% confidence interval of proportion smoker OA (0.34 0.50) OB (0.30 0.50) oc (0.30 0.55) OD (0.35 0.55)

Q: In a random sample of 5000 UWC students, 2846 claimed to live in one of the campus’s residences.…

A: Given information- Sample size, n = 5000 We have given that out of 5000 UWC students, 2846 claimed…

Q: In a random sample of six people, the mean driving distance to work was 24.9 miles and the standard…

A: The sample size: n=6 Sample mean: x¯=24.9 miles Standard deviation: s=7.9 Confidence level: C=0.99…

Q: were found to have an average weight of 9.7 ounces with a sample standard deviation is 0.20. Find…

A: As the population standard deviation is not known, we will use t distribution. Degrees of freedom…

Q: Suppose that the sample size had been​ 240, with x bar=4.1 and s=3.1. Use technology to find a​ 95%…

A: Sample mean = x̅ = 4.1 Sample size = n = 240 Sample S.D = s = 3.1 Standard Error = s/√n  =…

Q: if a sample n = 16, mean = 10.3,standard deviation is 2.6. calculate a 95% confidence interval.

A:

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: If a 90% confidence interval for the mean is found to be (1.25,4.75) using a sample of n=100, find…

A:

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

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Q: In a random sample of 15 ​people, the mean driving distance to work was 18.5 miles and the standard…

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

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Q: Construct the indicated confidence interval for the population mean . Assume c = 0.98, = 101.3, =…

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Q: Find the value of za/2 that corresponds to a confidence level of 89.48%.

A: Confidence level: C=0.8948

Q: Find a 95% confidence interval for a population mean u for these values: d. n=28, x= 24.5, s=7.05 e.…

A: (d) Obtain the 95% confidence interval for the population mean. The 95% confidence interval for the…

Q: A 95% confidence interval was found to be (14.312, 21.432). What is the margin of error? ME=

A: Answer: From the given data, 95% confidence interval was found to be (14.312, 21.432) lower limit =…

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: 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: The health of the bear population in Yellowstone National park is monitored by periodic measurements…

A: Given Mean = 182.9 Standard deviation=121.8 n=54

Q: 60 people were asked to measure their pulse rates after completing a 3 km run. The mean was 105…

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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: 5) Consider a confidence level of 87%, let E = 0.02 and p = 0.42. Find the sample size n. %3D

A:

Q: for a sample of 150 that has a mean of 6540 and a standard deviation of .89, calculate the 95%…

A: It is given that mean and standard deviation are 6,540 and 0.89, respectively.

Q: A student researcher wants to determine whether the mean score in Mathematics of the 25 students in…

A: Confidence interval are used to measure the range where the true parameter lies. It measure the…

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: A study of 81 bolts of carpet showed that their average length was 77.5 yards. The standard…

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Q: earcher wants to determine the proportion of elm trees in Windsor, Ontario, dying of Dutch elm…

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Q: A sample with 45 observations is taken. The mean is found to be 25, while the population standard…

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Q: for a sample of 57 that has a mean of 6200 and a standard deviation of 254, calculate the 95%…

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Q: or a sample of 121 that has a mean of 6540 and a standard deviation of 780, calculate the 90%…

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Q: ample mean of 62.2 was found and a 95% confidence interval of (57.3, 67.1) was also found. What is…

A: The sample mean for the  population is 62.2  . Confidence interval is (57.3 , 67.1)

Q: In a random sample of twelve ​people, the mean driving distance to work was 18.8 miles and the…

A: From the given information we want to construct 90% confidence interval.

Q: A laboratory tested twelve randomly selected chicken eggs and found that the mean amount of…

A: From the given information, n=12x¯=166.2s=5.3 Given confidence level is 90%. Significance level is…

Q: A study of 96 bolts of carpet showed that their average length was 77.5 yards. The standard…

A:

Q: 900 students were surveyed and had an average GPA of 2.7 with a standard deviation of 0.4. Calculate…

A:

Q: Assume that a sample is being used to estimate a population mean . If n = 16, = 38, and s = 3, find…

A: Sample size n=16Sample mean=38Standard deviation=3

Q: For a group of 20 students taking a PSDTF test, the mean heart rate was 96 beats per minute, and the…

A: Solution: Let X be the heart rate. From the given information, x-bar is 96 beats per minute, S=5 and…

Q: Construct the confidence interval for the population mean ¥. C= 0.98, x= 15.4, o= 5.0 and n= 65. A…

A: Obtain the 98% confidence interval for the population mean y. The 98% confidence interval for the…

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.