BYU-STAT 230-following cardiac surgery patients are encouraged
Question # 00393255
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Updated on: 09/23/2016 01:11 AM Due on: 09/23/2016
following cardiac surgery patients are encouraged to exercise regularly( 3 or more times a week). a physician suspects that patients exercise regularly immediately following cardiac surgery but tend to reduce, even stop exercising completely, over time. an investigation is planned to estimate the mean number of weeks that patients exercise regularly following surgery. Assume the standard deviation in the number of weeks cardiac patients exercise regularly is 6.3 weeks
| If a sample of 40 cardiac patients is followed, and the number of weeks in which each patient exercises regulary is recorded, what is the probability that the sample mean will be no more than 1 week higher than the true mean |
If the sample is increased to 100 cardiac patients, what is the probability that the sample mean will be no more than 1 week higher than the true mean? What are the steps to solve this? |
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Solution: BYU-STAT 230-following cardiac surgery patients are encouraged