Use the given information to find the minimum sample size required to estimate an unknown population mean How many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? We want 98% confidence that the sample mean is within $500 of the population mean, and the population standard deviation is known to be $1500.

Q: For a population with a mean of u=40 and a standard deviation of σ=8, find the z-score corresponding…

A:

Q: If a population has a standard deviation of 16, what is the minimum number of samples that need to…

A: Given,standard deviation (σ)=16margin of error (E)=2α=1-0.88=0.12α2=0.06Z0.06 =1.5548

Q: use the given information to find the minimum sample size required to estimate an unknown population…

A: Standard Deviation = σ = 89 Margin of Error = E = 5 Confidence Level = 95 Significance Level =…

Q: At what sample size would the standard deviation of the distribution of all possible sample means be…

A:

Q: Which of the following is the correct formula for the margin of error of a population mean where the…

A: Margin of error: A margin of error is a statistical measurement for the diff. between actual and…

Q: Calculate the sample standard deviation of the data shown. Round to two decimal places. X 22 17 29…

A: The random variable X follows normal distribution. We have to find the sample standard deviation.

Q: Given the mean and standard deviation of a normally distributed set of scores, determine the…

A: Given that  x = 35 ,  μ = 18 , ? = 7

Q: You want to estimate the mean fuel efficiency of a brand of automobiles with 99% confidence and a…

A:

Q: The Hilbert Drug Store owner plans to survey a random sample of his customers with the objective of…

A:

Q: Given the following data drawn from a population whose standard deviation is known to be 1 test to…

A: Given that  Population mean =5  Population standard deviation =1 Level of significance=0.05 Data :…

Q: A health care professional wishes to estimate the birth weights of infants. How large a sample must…

A: we have to find sample size for given data...

Q: given the normally distributed variable xwith the mean 50 and standard deviation 7, find p (56]x[68)

A: Given: μ=50 and σ=7. The z-score is calculated as-z=x-μσ

Q: On this assignment, round all answers (when necessary) to exactly three decimal places. The numbers…

A:

Q: 5. If a population has a standard deviation of 16, what is the minimum number of samples that need…

A:

Q: For a population with a mean of μ= 50 and a standard  deviation of σ= 10, compute the standard error…

A: For a population with mean µ  and standard deviation σ, the standard error is σM = σ/√n, where M is…

Q: Use the given information to find the minimum sample size required to estimate an unknown population…

A: We have to find given probability.

Q: A random sample of 82 eighth grade students' scores on a national mathematics assessment test has a…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5 find P(X…

A: Given dataMean = 35Standard deviation = 7.5

Q: READ AND SOLVE THE FOLLOWING: Interval Estimate of Population Mean 1. Suppose that the amount of…

A: We. Have to find confidence interval for given data..

Q: The population standard deviation for the heights of dogs, in inches, in a city is 3.2 inches. If we…

A:

Q: Which of the following best represents the appropriate sample size to use when estimating an unknown…

A: Given that  Population Standard deviation=σ=12 Margin of error=E=3

Q: The director of research and development is testing a new medicine. She wants to know if there is…

A: We have to write null and alternative hypothesis. The hypothesis are depending upon the claim of the…

Q: Given data that is normally distributed and has a mean of 5.6 and a standard deviation of 1.2, what…

A: Given that, μ=5.6,σ=1.2x=6.1 The formula for calculating the z-value for a x-value is,

Q: For a sample of n = 16 scores, what is the value of the population standard deviation (σ) necessary…

A:

Q: The symbol oz represents the standard deviation of a sample of size n. True O False

A: Answer : B. False

Q: Find the standard deviation, s, of sample data summarized in the frequency distribution table below…

A: Given: Interval Frequency 30-39 1 40-49 3 50-59 8 60-69 3 70-79 15 80-89 31 90-99…

Q: For a population with a mean of μ = 28 and a standard deviation of σ = 12, find the z-score…

A:

Q: Past experience indicates that the standard deviation in the time it takes for a “fast lube”…

A:

Q: Use the output provided in the formula sheets folder. Using the reduced model, what is the value of…

A: Based on given output we have to determine the estimate of standard deviation i.e S

Q: Use the given information to find the minimum sample size required to estimate an unknown population…

A:

Q: Given that X is normally distributed with a mean of 50 and a standard deviation of 4, determine P(45…

A:

Q: For a population with a mean of 40 and a standard deviation of 8 find the z score corresponding to…

A: a. The population mean is 40 and a standard deviation is 8. The z-score of x=34 for a sample of n=1…

Q: For a sample of n = 16 scores, what is the value of the population standard deviation (σ) necessary…

A: Given n = 16  We know that the standard error of the sample mean,  σMM = σ/n     ⇒   σ =n×σMM where…

Q: Given the matched-pairs below, compute the mean and standard deviation for X Y. X 14.1 13.6 15.8…

A:

Q: The sample size needed to estimate a population mean within 1.5 units with a 99% confidence when the…

A: From the provided information, Population standard deviation (σ) = 8 and E = 1.5 Confidence level =…

Q: The population standard deviation for the heights of dogs, in inches, in a city is 6.2 inches. If we…

A:

Q: For a population with a mean of μ= 40 and a standard deviation of σ= 6, find the z-score…

A: From the provided information, Population mean (µ) = 40 Standard deviation (σ) = 6 a) Sample size…

Q: For a population with a mean equal to 200 and a standard deviation equal to 30, calculate the…

A:

Q: Use the given information to find the minimum sample size required to estimate an unknown population…

A: Determine the sample size n needed. Obtain the critical value of z at the 95% confidence level.…

Q: Given a normally distributed set of scores with mean μ = 86.5 and standard deviation σ = 11.4,…

A:

Q: The population standard deviation for the heights of dogs, in inches, in a city is 6.2 inches. If we…

A: It is given that confidence level is 0.92, population standard deviation is 6.2, and the margin of…

Q: Use the given information to find the minimum sample size required to estimate an unknown population…

A:

Q: A population has a standard deviation of 8. What is the minimum sample size needed to estimate a…

A: Given : Margin of error, ME = 2.0 population standard deviation, σ = 8.0…

Q: It is reported that a survey had a standard error of the mean of 20, and it is assumed that the…

A: Given information- Population standard deviation (σ) = 500 Standard error of the mean (SE) = 20 We…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A:

Q: A nurse at a local hospital is interested in estimating the birth weight of infants. How large a…

A: The following information has been provided: α=0.02,E=4,σ=5\alpha = 0.02, E = 4, \sigma = 5…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A:

Q: A nurse at a local hospital is interested in estimating the birth weight of infants. How large a…

A: From the provided information, Population standard deviation (σ) = 6 ounces Confidence level = 98%…

Q: Given the situation or problem, determine what is being asked. A random sample of size n = 16 was…

A: Givensample size(n)=16Mean(μ)=32standard deviation(σ)=5