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1. Serum cholesterol were taken from a population of college students. The results were normally distributed. Males had a mean of 195 and a standard deviation of 10. Female a had a mean of 185 and a standard deviation of 12. Concern was expressed by the health educators on a particular college campus of 10,000 that students with serum cholesterol levels above 200 might be at an increased risk of heart disease. If the campus was equally divided between males and females, what are the probabilities of males and females on this campus would be at risk?
2. The weight of 18-24 year old women are normally distributed with a mean of 132 pounds and a standard deviation of 27.4 .If one randomly selected 150 of these selected women age 18-24 years, how many of them would be expected to weigh 100 to 150 pounds?
3. An athletic association wants to sponsor a footrace. The average time it takes to run the course is 586 mins. with a standard deviation of 4.3 mins. If the association decides to include only the top 20% of the racer, what should the cut off time be the tryout run?
4. Assume that the age at onset of disease X is distributed normally with a mean of 50 years and a standard deviation of 12 years. What is the probability that an individual afflicted with disease X developed it before age 35?
provide me a half page response to the below discussion post.to review my employment is at a university where my
a test to detect pollutants is 90 accurate when pollutants are present in a sample and 96 accurate when pollutants are
the weight of the cereal in a box is a random variable with mean 12.15 ounces and standard deviation 0.2 ounce. what
Suppose a random sample of 500 adults is asked, "Do you own a credit card?" Describe the sampling distribution of p ^ , the proportion of adults who own a credit card.
If 100 women are randomly selected, find the probability that they have a mean pregnancy between 266 days and 268 days.
Choose, at random, a direction which will keep you on dry land, and walk 1 km in that direction. Let P denote your position. What is the expected distance from P to the river?
The probability that a publicity campaign increases the sales is .80. The probability that the cost of developing that campaign of publicity stays within the budget is .40. Suppose that the events are independent, determine the probability that th..
the following data is the square footage in thousands of square feet and annual sales for a sample of 14 branches of
there are 5 men and 5 women and no 2 men or 2 women can sit next to each other
determine if the following data set is a population or a sample the average electric bill for the 50 united states and
Adult men have weights that are normally distributed with a mean of 172 lb and a standard deviation of 29 lb. Find the probability that the mean weight of the men in the sample is between 170 and 175 lb.
suppose a random sample of 100 u.s. companies taken in 2005 showed that 21 offered high-deductible health insurance
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