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The accounting department at Western Materials Inc. national manufacturer of unattached garages, reports it takes two construction workers of a mean of 32 hours and standard deviation of 2 hours to erect Red Barn MODEL. Assume the assembly times folllow the normal distribution.
a. What percent of the garages take between 32 hours an 34 hours to erect?
b. What percent of the garages take between 29 hours and 34 hours to erect?
c. What percent of the garages take 28.7 hours or less to erect?
d. Of the garages, 5 percent take how many hours or more to erect?
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
What is the 95% confidence interval estimate for the difference between the mean reflectivity reading for Paint A and Paint B? Please complete the blank: "we can be 95% confident that the true difference between the actual means is?
Use MegaStat's output for multiple regression to determine the multiple regression equation
A 95% confidence interval for µ is found to be 652 ± 21.56 = ($630.44, $673.56). Determine which of the following statements is true.
An exam consists of 10 true or false questions. If a student guesses at every answer, what is the probability that he or she will answer exactly six questions correctly? (Round the answer to three decimal places)
Recognize the given samples are independent samples or matched pairs.
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
Determine the probability that: a) Exactly 3 will have this mild side effect.
Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopulation, those with high exposure and those with low exposure.
Create ADM/PERT diagram. Determine the critical path.
In the Arnold's Muffler example for the exponential distribution, the average rate of service was given as 3 per hour, and the times were ex-pressed in hours.
Explain the distribution of mean of samples of size 15.
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