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A newspaper article reported that people spend a mean of 6.5 hours per day watching TV, with a standard deviation of 2.1 hours. A psychologist would like to conduct interviews with the 20% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
let x be a negative random variable with parameter r p. prove that ex rp by expressing x as a sum of indicator random
Brain cancer is a rare disease. In any year there are about 3.1 cases per 100000 od population. Suppose a small medical insurance company has 150000 people on its books.
If possible, use a computer-based multiattribute decision program to do this problem.
A sociologist wanted to determine whether there was a difference in the amount of time children aged 5-7 spent watching tv. what is the null hypothesis? Find the expected value.
Determine a point estimate of population mean. Determine the 99% confidence interval of true mean weight of the minivans.
as reported by the u. s. census bureau in americas families and living arrangements the living arrangements by age of
Using the .10 level of significance, can we conclude there is a significant difference in the proportion of adults and the proportion of teens who rated the new video?
Develop a process map about the prescription filling process for HMO's pharmacy, in which you specify the key problems that the HMO's pharmacy might be experiencing.
Find the percentage of women meeting and requirement, men meeting the height requirement and if the requirements are changed to exclude only the tallest 5% of men and the shortest 5% of women, what are the new min and max height requirements? Pleas..
Find the probabilities for the following discrete random variables and find the probability that the salad contains more than 5 vegetables on i) a given day and on ii)3 of the next 4 days?
Sample from a normal population having a standard deviation of 0.04, what is the probability that the mean of a random sample of size 25 will be "off" by at most 0.02.
the volumes of soda in quart soda bottles are normally distributed with a mean of 32 oz. and a standard deviation of
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