À credit union took a random sample of 40 checking accounts. The sample mean account balance was $3021.50, and a 90% confidence interval for the mean was $2197 < u < $3846 which of the following is a correct interpretation of the interval?
À credit union took a random sample of 40 checking accounts. The sample mean account balance was $3021.50, and a 90% confidence interval for the mean was $2197 < u < $3846 which of the following is a correct interpretation of the interval?
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![A credit union took a random sample of 40 checking accounts. The sample mean
account balance was $3021.50, and a 90% confidence interval for the mean was
$2197 < u < $3846 which of the following is a correct interpretation of the
interval?
About 9 out of 10 people have a checking account balance between $2197 and
$3846.
O We are 90% confident that the mean checking account balance at this credit
union is between $2197 and $3846.
O If we took random samples of checking accounts at this credit union, about 9 out
of 10 of them would produce this confidence interval.
We are 90% confident that the mean checking account balance in the US is
between $2197 and $3846.
We are 90% confident that the mean balance for checking accounts in the
sample was between 2.76 and 2.88. -](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1f8ff3ba-abcf-4f56-951b-5b48557c260d%2F3a5e7326-0141-4b67-bd84-a67e834d242c%2Ft0axwj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A credit union took a random sample of 40 checking accounts. The sample mean
account balance was $3021.50, and a 90% confidence interval for the mean was
$2197 < u < $3846 which of the following is a correct interpretation of the
interval?
About 9 out of 10 people have a checking account balance between $2197 and
$3846.
O We are 90% confident that the mean checking account balance at this credit
union is between $2197 and $3846.
O If we took random samples of checking accounts at this credit union, about 9 out
of 10 of them would produce this confidence interval.
We are 90% confident that the mean checking account balance in the US is
between $2197 and $3846.
We are 90% confident that the mean balance for checking accounts in the
sample was between 2.76 and 2.88. -
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