A simple random sample of 40 items resulted in a sample mean of 25 . The population standard deviation is
\sigma =9
. Round your answers to two decimal places. a. What is the standard error of the mean,
\sigma _(1)
?
_(_())_(_())
b. At
95%
confidence, what is the margin of error?
_(_())_(_())

Question

A simple random sample of 40 items resulted in a sample mean of 25 . The population standard deviation is

\sigma =9

. Round your answers to two decimal places. a. What is the standard error of the mean,

\sigma _(1)

?

_(_())_(_())

b. At

95%

confidence, what is the margin of error?

_(_())_(_())

Accepted Answer

Expert Answer to - A simple random sample of 40 items resulted in a sample mean of 25 . The population standard deviati

Answer

Solution for - A simple random sample of 40 items resulted in a sample mean of 25 . The population standard deviati

Answer

This an additional answer to - A simple random sample of 40 items resulted in a sample mean of 25 . The population standard deviati

(Solved): A simple random sample of 40 items resulted in a sample mean of 25 . The population standard deviati ...