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A person's blood glucose level and diabetes are closely linked. Let x be a random variable measured in milligrams of glucose per deciliter (1/10 of a liter) of blood. After a 12-hr fast, the random variable y will have a distribution that is approximately normal with a mean m = 85 and standard deviation, s = 25. Note: After 50 years of age, both the mean and standard deviation tend to increase. Answer the following questions. with plots of a rea under the curve
a) Find the probability that an adult under 50 years of age will have a glucose level greater than 75 mg/dl.
b) Suppose you find an adult , under the age of 50, with a blood glucose level that exceeds 180 mg/dl. Explain whether to consider this blood glucose exceptionally high and cause for alarm?
Choosing at random. Abby, Deborah, Mei-Ling, Sam, and Roberto work in a firm's public relations office. Their employer must choose two of them to attend.
Probability calculations reveal the following information. The probability of a favourable research report = 0.59. The probability of high sales given a favourable research report = 0.95. The probability of high sales given an unfavourable research r..
a crossover trial is conducted to compare an experimental medication for migraine headaches to a currently available
Let X r~Geometric(?) and Y r Geometric(?2), with X and Y chosen independently. Compute P (X= Y). Explain what this probability is in terms of coin tossing.
If the firm's yield to maturity on bonds is 8.5% and investors require a 12% return on the firm's common stock, what is the firm's WACC?
students in a class are asked how often they read online newspapers. they answer using a 12345 scale where 1 never and
You are the manager of a fast food restaurant. You want to determine whether the population mean waiting time to place an order has changed in the past month from its previous population mean value of 4.5 minutes.
Based on what you have learned in the previous exercise, what do you expect to find for the percent hit with a large number of trials if the confidence level is 50%? Explain your answer.
suppose you want to estimate the average number of sick days taken by all employees at a large company during a year.
Which bond is cheaper to deliver given a T-note futures price of 113.81?
Hypothesis testing in areas such as medicine, courts, marketing analysis. How might hypothesis testing be used to determine where to put stop lights?
In a sample of 100 M&M's, it is found that 8% are brown. Use a 0.05 significance level to test the claim that of the Mars candy company that the percentage of brown M&M's is equal to 13%. Identify the null and alternative hypotheses. Find the tes..
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