A Credit Union Took a Random Sample of 40 Accounts

Multiple Choice

A credit union took a random sample of 40 accounts and obtained the following 90% confidence interval for the mean checking account balance at the institution: $2193 < μ(balance) < $3828.

A) We are 90% confident that the mean checking account balance in the U.S.is between $2193 and $3828.
B) About 9 out of 10 people have a checking account balance between $2193 and $3828.
C) If we took random samples of checking accounts at this credit union,about nine out of ten of them would produce this confidence interval.
D) We are 90% confident that the mean checking account balance at this credit union is between $2193 and $3828,based on this sample.
E) We are 90% sure that the mean balance for checking accounts in the sample was between $2193 and $3828.