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Using the population distribution below, suppose thousands of samples of size 40 are taken from this...
A random sample of size 36 is taken from a population with a mean of 50...
A random sample of size 36 is taken from a population with a mean of 50 and a standard deviation of 5. The sampling distribution of ________. A. cannot be determined B. is skewed to the right C. is skewed to the left D. is approximately normal
If we are considering a population that is approximately normal and we choose the sample size...
If we are considering a population that is approximately normal and we choose the sample size of n = 3, what is likely true about the shape of the sampling distribution of the sample mean? a)The shape of the sampling distribution of the sample mean is skewed left because the sample size is less than 30. b)The shape of the sampling distribution of the sample mean is skewed right because the sample size is less than 30. c)The shape of...
A random sample of size n = 60 is selected from a binomial distribution with population...
A random sample of size n = 60 is selected from a binomial distribution with population proportion p = 0.25. (a) What will be the approximate shape of the sampling distribution of p? O skewed to the right O skewed to the left O normal (b) What will be the mean and standard deviation (or standard error) of the sampling distribution of p? (Round your answers to four decimal places.) C standard deviation mean (c) Find the probability that the...
A simple random sample of size nequals 81 is obtained from a population with mu equals...
A simple random sample of size nequals 81 is obtained from a population with mu equals 73 and sigma equals 9 . ?(a) Describe the sampling distribution of x overbar . ?(b) What is Upper P left parenthesis x overbar greater than 74.35 right parenthesis ?? ?(c) What is Upper P left parenthesis x overbar less than or equals 70.7 right parenthesis ?? ?(d) What is Upper P left parenthesis 72.3 less than x overbar less than 74.85 right parenthesis...
Describe the sampling distribution of ModifyingAbove p with caret. Assume the size of the population is...
Describe the sampling distribution of ModifyingAbove p with caret. Assume the size of the population is 20,000. n=500, p=0.2 Choose the phrase that best describes the shape of the sampling distribution of ModifyingAbove p with caret below. A. Not normal because n less than or equals 0.05 Upper N and np left parenthesis 1 minus p right parenthesis less than 10. B. Approximately normal because n less than or equals 0.05 Upper N and np left parenthesis 1 minus p...
1. Select all true statements about sample mean and sample median. A) When the population distribution...
1. Select all true statements about sample mean and sample median. A) When the population distribution is skewed, sample mean is biased but sample median is an unbiased estimator of population mean. B) When the population distribution is symmetric, both mean and sample median are unbiased estimators of population mean. C) Sampling distribution of sample mean has a smaller standard error than sample median when population distribution is normal. D) Both mean and median are unbiased estimators of population mean...
If the population is negatively skewed, then the sampling distribution of the mean, with samples of...
If the population is negatively skewed, then the sampling distribution of the mean, with samples of size greater than 30, for thus distribution will be ___________.
A random sample of size 32 is to be selected from a population that has a...
A random sample of size 32 is to be selected from a population that has a mean μ = 48 and a standard deviation σ of 13. (a) This sample of 32 has a mean value of x, which belongs to a sampling distribution. Find the shape of this sampling distribution. skewed right approximately normal skewed left chi-square (b) Find the mean of this sampling distribution. (Give your answer correct to nearest whole number.) (c) Find the standard error of...
A random sample of size 39 is to be selected from a population that has a...
A random sample of size 39 is to be selected from a population that has a mean μ = 53 and a standard deviation σ of 15. (a) This sample of 39 has a mean value of x, which belongs to a sampling distribution. Find the shape of this sampling distribution. -skewed right -approximately normal -skewed left -chi-square (b) Find the mean of this sampling distribution. (Give your answer correct to nearest whole number.) (c) Find the standard error of...
Page 1 Question 1 Suppose we take repeated random samples of size 20 from a population...
Page 1 Question 1 Suppose we take repeated random samples of size 20 from a population with a Select all that apply. mean of 60 and a standard deviation of 8. Which of the following statements is 10 points true about the sampling distribution of the sample mean (x)? Check all that apply. A. The distribution is normal regardless of the shape of the population distribution, because the sample size is large enough. B. The distribution will be normal as...
A random sample of size n = 60 is selected from a binomial distribution with population proportion p = 0.25. (a) What will be the approximate shape of the sampling distribution of p? O skewed to the right O skewed to the left O normal (b) What will be the mean and standard deviation (or standard error) of the sampling distribution of p? (Round your answers to four decimal places.) C standard deviation mean (c) Find the probability that the...
Page 1 Question 1 Suppose we take repeated random samples of size 20 from a population with a Select all that apply. mean of 60 and a standard deviation of 8. Which of the following statements is 10 points true about the sampling distribution of the sample mean (x)? Check all that apply. A. The distribution is normal regardless of the shape of the population distribution, because the sample size is large enough. B. The distribution will be normal as...
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