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The Whirlwind Corporation manufactures two electrical products: Ceiling fans and floor fans. The assembly process for each is similar, and both require a certain amount of labor and certain amount of wiring. Each ceiling fan requires 4 hours of labor and 2 feet of wining. Each floor fan requires 2 hours of labor and 3 feet of wiring. During the next production period upto 240 hours of labor is available and 180 feet of wiring is available. Each ceiling fan can be sold at a unit profit of $75 and each floor fan can be sold at a unit profit of $50. Whirlwind will have no trouble selling all the fans it has in its inventory, and also Whirlwind is interested in making the most profit it could make.
Set-up/solve the problem graphically. (How many ceiling fans and how many floor fans should be made?)
Find the value of the standard normal random variable z, called z 0 such that:
The following table shows the number of miles driven in each trial.
See if there is a difference in their means and variances.
Compute lower and upper quartiles of log10-balances? Determine 95% range of the balances in $s? Express in English what the two boundaries mean.
One of the most important uses of a correlation is its potential use in_________
In each of the following situations, the sampling frame does not match the population, resulting in undercoverage. Give examples of population members that might have been omitted:
Would the null hypothesis be accepted or rejected in this case?
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
Is there evidence of a difference in objection to sharing information among the organizational groupings? (use α = 0.05)
It has been claimed that women live longer than men; however, men tend to be older than their wives. Ages of sixteen husbands and wives from England were obtained. The null hypothesis of equality of means is rejected. What conclusion can be made f..
Construct a 95% confidence interval for the difference in the proportions of women and men who have regular exercise programs.
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