Suppose that Body Mass Index (BMI) for a population of30-60-year-old men follows a Normal distribution with mean 26, andstandard deviation 4. Q: Please calculate the range of BMI that 95%of subjects fall within:
Suppose we know that the prevalence of asthma among Americanchildren is 11%. Researchers conducted a study among 600 childrenin Boston and found that 56 had asthma. Q:Suppose researchersoriginally planed to enroll 1000 children, but they had to reducethe sample size to 600 due to budget deficit. Which of thefollowing decreased compared to the original design? A. The powerof the hypothesis test B. The probability of making a Type I errorC. The probability of making a Type II error D. The sample mean
