Question

In a one-year mortality investigation, 25 of the 100 ninety-year-old males and 20 of the 150 ninety-year-old female present at the start of the investigation died before the end of the year. Assuming that the numbers of deaths follow independent binomial distributions, calculate a symmetrical 95% confidence interval for the difference between male and female mortality rates at this rates at this age

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

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