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Topic: Normal Distribution: Expected Value
PLEASE EXPLAIN not just answers
What is the expected value of sum of the points if you roll a die twice? Why?
What is the expected value of sum of the points if you roll a die one thousand times? Why?
BMI in children is approximately normally distributed with a mean of 24.5 and a standard deviation of 6.2. A BMI between 25 and 30 is considered overweight. What proportions of children are overweight?
suppose a group of 900 smokers who all wanted to give up smoking were randomly assigned to receive an antidepressant
What is the stock's expected return? What is the stock's standard deviation? What is the stock's coefficient of variation?
Consider the first four (Arm Circumference, BMI) pairs in the NHANES III data given in Table 15.2, namely,
a researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back pain. prior to
Standard deviation of $45. What is the probability that a randomly selected elementary school teacher earns more than $525 a week?
Suppose we have data from a sample. The sample mean is 15, and the error bound for the mean is 3.2. What is the confidence interval estimate for the population.
suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear
Construct and interpret a 90% confidence interval for the mean suppertime of a vampire bat whose meal consists of a frog.
a total of 300 participants are selected for a study of risk factors for cardiovascular disease. at baseline study
Based on NSC estimates, companies with 50 employees are expected to average three employee off-the-job accidents per year. What is the probability of at least two off-the-job accidents during a one year period?
How is N determined for the Wilcoxon signed-rank test and how does this differ from the way N is typically determined for most statistical tests?
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