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Question: A National study has determined that people who work full time average 43.4 hours worked per week.
Assume that the number of hours worked per week for those who work full time is normally distributed. Suppose 12% of these workers work more than 48 hours. Based on this percentage, what is the standard deviation of number of hours worked per week for those workers?
Using the following data, test the question that an equal number of Democrats, Republicans, and Independents voted during the most recent election.
Find out the probbility that exactly five arrive within two days?
College Athletics: Graduation Rate. Women Athletes at the University of Colorado Boulder have a long term graduation rate of 67%. Over the past several years, a random sample of 38 women athletes at the school showed that 21 eventually graduated.
A manufacturer of executive jet aircraft is concerned with its profit picture over the short run. It produces two different models of planes, x1 and x2. Its profits are $30,000 for each x1 and $20,000 for each x2. There are two major constraints o..
Statistics Questions Set: If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)
Douglas Boats is considering the possibility of expanding the warehouse for the WM-4 motors. How much should Douglas Boats expand, and how much would it be worth for the company to make the expansion? Assume demand is constant throughout the year.
Assume if the students toss the coin 200 times each about 68% should have proportions among what two numbers.
Question: If the regression line is drawn as Y = C + 1075x, when X was 2 and y was 239, given that the intercept was 11. Calculate the residual
They want you to determine what the data indicate about this.In this problem I am having an issue trying to determine what equation to use to solve. Is this a one or two way ANOVA or should I just use a z-test to solve?
If the company wanted to combine the sales data from both companies, how should the new corporate database set up this relationship (take your best guess, one-to-one, or one-to-many)? Why?
Enter the data into R, and calculate the means for placebo and epinephrine. Find a 95% confi dence interval for the mean diff erence in cholesterol levels between the placebo and epinephrine. Use the confi dence interval to test your null hypothes..
Composite sampling is a way to reduce laboratory testing costs. A public healthdepartment is testing for possible fecal contamination in public swimming pools. In thiscase, water samples from 5 pools are combined for one test.
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