Homework SourseWe have the survey data on the body mass index BMI of 656 yo
We have the survey data on the body mass index (BMI) of 656 young women. The mean BMI in the sample wasx¯=26.8. We treated these data as an SRS from a Normally distributed population with standard deviation=7.6 .
Give confidence intervals for the mean BMI and the margins of error for 90%, 95%, and 99% confidence.
| Conf. Level | Interval (±0.01) | margins of error (±0.0001) |
| 90% | ____to______ | ___________________ |
| 95% | ____to______ | __________________ |
| 99% | ____to______ | __________________ |
Solution
90% (26.311, 27.289)
95% (26.217, 27.383)
99% (26.033, 27.567)
