A Credit Union Took a Random Sample of 40 Accounts $\mu$

question 12

Multiple Choice

A credit union took a random sample of 40 accounts and yielded the following 90% confidence interval for the mean checking account balance at the institution:
$2183 < $\mu$ (balance) < $3828.Which of the following is the correct interpretation?

• A)If we took random samples of checking accounts at this credit union, about nine out of ten of them would produce this confidence interval.
• B)About 9 out of 10 people have a checking account balance between $2183 and $3828.
• C)We are 90% confident that the mean checking account balance at this credit union is between $2183 and $3828, based on this sample.
• D)We are 90% sure that the mean balance for checking accounts in the sample was between $2183 and $3828.
• E)We are 90% confident that the mean checking account balance in the U.S.is between $2183 and $3828.

---

Definitions:

Viral Exposure

Contact with or introduction to a virus, which may lead to infection and illness.

Prenatal

Pertaining to the period or development before birth, encompassing the gestation period from conception to birth.

Prenatal Viral Exposure

Exposure to a virus in the womb during pregnancy, which can potentially lead to developmental disorders or health issues in the baby.

Schizophrenia

A serious psychological condition marked by disturbances in thinking, sensing, feeling, and relating to others.