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A research concludes that the number of hours of exercise per week for adults is normally distributed with a mean of 3.5 hours and a standard deviation of 3 hours. Show all work. Just the answer, without supporting work, will receive no credit.
(a) Find the 80th percentile for the distribution of exercise time per week. (round the answer to 2 decimal places)
(b) What is the probability that a randomly selected adult has more than 7 hours of exercise per week? (round the answer to 4 decimal places)
What is the probability that someone selected at random will score 81 or lower and what percentage of all trainees will score between 60 and 75?
Perform pair wise comparisons of the treatment means by computing a Tukey simultaneous 95 percent confidence interval for each of the pair wise differences μ1 - μ2, μ2 - μ3, and μ2 - μ3. Which type of program content results in the worst mean bran..
Explain the concept of "Regression Analysis", its types (3 types at least), applications and usefulness. Provide real application of its usage.
As discussed in Section 5.5, a grammar is in Greibach Normal Form (GNF) if all productions are of the form A→aα, where a is a terminal symbol and α is a string of zero or more grammar (i.e., terminal or nonterminal) symbols.
You attempt a 50 item (n = 50) true-and-false exam. You did not study for the material and your attempt to answer any item is a guess, with a 50% chance that you will get any item correct. You need a score of 30 or better to pass the exam.
Rose's garden is a square with sides of length x feet. Next spring she plans to make it rectangular by lengthening one side 5 feet and shortening the other side by 5 feet. What polynomial represents the new area?
derive expression of slope at support and deflection at centre of simply supported beam with centre load
Equation of the regression line - Evaluate the equation of the regression line and Find y' when x=47 years.
A population of scores forms a normal distribution with a mean of 40 and a standard deviation of 12. What is the probability of randomly selecting a score less than x=34?
How would you describe "probability" from a Statistics for Business perspective to a person that has limited exposure to statistics?
A plane has two alternators with the probability that a given alternator will fail on a l hour flight is .02. What is the probability that both will fail
Find the minimum sample size required for estimating the overall proportion of students who passed Exam P in 2009 to within 4% with 95% confidence if it is known that this proportion is between 30% and 40%.
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