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Q1) Accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes 2 construction workers a mean of 32 hours and standard deviation of 2 hours to erect Red Barn model. Suppose the assembly times follow normal distribution.
a) Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
b) Determine percent of garages take between 29 hours and 34 hours to erect?
c)What percent of garages take 28.7 hours or less to erect?
d) Of the garages, 5 percent take how many hours or more to erect?
The critical value of F at 95% confidence when there is a sample size of 21 for the sample with the smaller variance, and there is a sample size of 9 for the sample with the larger sample variance is:
What is the probability that a particular driver had exactly two speeding violations?
Find the margin of error for the 95% confidence interval used to estimate the population proportion.
To test whether the population standard deviation differ significantly using Chi-Square test.
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
The management of White companies considering a new method of assembling its golf cart. Compute which assembly time using the new method is faster.
Compute the probability that debt for a randomly selected borrower with good credit is more than $18,000?
There is no proof the new policy is more effective, but we cannot finish the policy has no effect on smog. Interpretation of P-value for the given context.
Suppose that past data are not available for developing a planning value for p; therefore, you will use p = 0.050 for the planning average.
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots. A partial ANOVA table
LINEAR PROGRAMMING MODELS
The following table shows the hardness (in Brinell hardness numbers) and the tensile strength (in thousands of pounds per square inch) of ten specimens of a certain alloy.
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