A research team surveyed 251 adult Ohioans and found the mean monthly grocery cost for a single person is $248.33 with a standard deviation of $21.43. b. SUPPOSE the 90% confidence interval of the mean is $240 to $256. Interpret this confidence interval. a. One can be 90% confident the true mean cost of groceries per month for a single person (in America) is between $240 and $256. b. One can be 90% confident the sample mean cost of groceries per month for a single person (in Ohio) is between $240 and $256. c. One can be 90% confident the true mean cost of groceries per month for a single person (in Ohio) is between $240 and $256. d. 90% of adult Ohioans spend between $240 and $256 on their groceries every month.
A research team surveyed 251 adult Ohioans and found the
b. SUPPOSE the 90% confidence interval of the mean is $240 to $256. Interpret this confidence interval.
| a. |
One can be 90% confident the true mean cost of groceries per month for a single person (in America) is between $240 and $256. |
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| b. |
One can be 90% confident the sample mean cost of groceries per month for a single person (in Ohio) is between $240 and $256. |
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| c. |
One can be 90% confident the true mean cost of groceries per month for a single person (in Ohio) is between $240 and $256. |
|
| d. |
90% of adult Ohioans spend between $240 and $256 on their groceries every month. |
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