A population has a mean
muμequals=7272
and a standard deviation
sigmaσequals=99.
Find the mean and standard deviation of a sampling distribution of sample means with sample size
nequals=8181.
A population has a mean muμequals=7272 and a standard deviation sigmaσequals=99. Find the mean and standard...
A population has a mean muμequals=7575 and a standard deviation sigmaσequals=2424. Find the mean and standard deviation of a sampling distribution of sample means with sample size nequals=3636. mu Subscript x overbarμxequals=nothing (Simplify your answer.) sigma Subscript x overbarσxequals=nothing (Simplify your answer.)
A simple random sample of size nequals=6969 is obtained from a population with muμequals=6464 and sigmaσequals=44. Does the population need to be normally distributed for the sampling distribution of x overbarx to be approximately normally distributed? Why? What is the sampling distribution of x bar? What is the sampling distribution of x overbarx? Select the correct choice below and fill in the answer boxes within your choice.
A population has a mean of 143 and a standard deviation 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n =46.
A population has a mean muequals81 and a standard deviation sigmaequals18. Find the mean and standard deviation of a sampling distribution of sample means with sample size nequals36. mu Subscript x overbarequals nothing (Simplify your answer.)
A population has a mean μ=73 and a standard deviation σ=24. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=64.
A population has a mean μ=87 and a standard deviation σ=30. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=249. μx= ?????
Assume the random variable X is normally distributed, with mean muμequals=5050 and standard deviation sigmaσequals=55. Find the 12 th12th percentile.
A population has a mean mu= 72 and a standard deviation sigma= 6. Find the mean and standard deviation of a sampling distribution of sample means with sample size n= 36.
A population has a mean μ=71 and a standard deviation σ=27. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=81. μx=_____ (Simplify your answer.)
Assume the random variable x is normally distributed with mean muμequals=8888 and standard deviation sigmaσequals=44. Find the indicated probability. P(xless than<81)