The heights of a simple random sample of 400 male high school sophomores in a Midwestern state are measured.The sample mean is = 66.2 inches.Suppose that the heights of male high school sophomores follow a Normal distribution with a standard deviation of $\sigma$= 4.1 inches.What is a 95% confidence interval for $\mu$?
A)(58.16,74.24)
B)(59.46,72.94)
C)(65.80,66.60)
D)(65.86,66.54)

Question

The heights of a simple random sample of 400 male high school sophomores in a Midwestern state are measured.The sample mean is  = 66.2 inches.Suppose that the heights of male high school sophomores follow a Normal distribution with a standard deviation of $\sigma$= 4.1 inches.What is a 95% confidence interval for $\mu$?
A)(58.16,74.24) 
B)(59.46,72.94) 
C)(65.80,66.60) 
D)(65.86,66.54)

Quizplus · Accepted Answer

The Answer of The heights of a simple random sample of 400 male high school sophomores in a Midwestern state are measured.The sample mean is  = 66.2 inches.Suppose that the heights of male high school sophomores follow a Normal distribution with a standard deviation of $\sigma$= 4.1 inches.What is a 95% confidence interval for $\mu$?
A)(58.16,74.24) 
B)(59.46,72.94) 
C)(65.80,66.60) 
D)(65.86,66.54)

The Heights of a Simple Random Sample of 400 Male σ\sigmaσ

The Heights of a Simple Random Sample of 400 Male $\sigma$