want to be 95% confident of esti you population proportion to within a sampling and there is historical evidence that the pos approximately 0.47, what sample size i
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Given that
Margin of error =E =0.05
Population proportion p=0.47
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- 2428A research study investigates the occurrence of extra heartbeats between untrained and trained older patients at risk for heart attack. Researchers decide to test whether there is a significant difference in the number of extra beats depending on training status. They obtain measurements over 10 minutes, summarized below. What did they find? If there is a significant difference, how big of one is there? (Provide a range.) dfadi = 25 (if needed) Status # patients Untrained 43 Mean # extra beats/10 min 72.46 32.35 Standard Deviation Minimum # extra beats Maximum # of extra beats Skew Kurtosis 28 165 -0.21 0.62 Trained 21 169.50 62.93 66 266 0.13 -0.1
- I need the answer to this question please.You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 90% confident that you estimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Video [+] n = Submit Question 近Hi, I've been confused about the problem since I can't seem to find the population mean. I've attached a picture of the problem. Thanks !!