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What is the critical value for a one-tailed sign test, at α = 0.01 when there are 14 samples?
A. 4
B. 1
C. 2
D. 3
Using the high-low method, calculate the total fixed factory overhead cost and the variable factory overhead cost per direct labor hour.
the data below are the final exam scores of 10 randomly selected statistics students and the number of hours they
Jessica must finish two courses (much like myself), statistics and economics, in order to complete the requirements for a BA degree. All along she has maintained an 80% average.
1. What is the current status of the housing stock in the county?
a sample of 210 bell computers has 56 defectives. theory suggests that a third of all bell computers should be
An automobile company thinks that with new designs, it scars will last longer before having a problem. For this reason the company wishes to extend the warranty that comes with the vehicle in hopes of attracting more customers.
Assume gasoline prices for a region are normally distributed. Do the data you obtained provide enough evidence to reject the claim? Use a 1% level of signi?cance.
The standard deviation of the sample was 6 people. Develop a 95 percent confidence interval for the population mean.
study the following minitab output from a regression analysis to predict y from x.a. what is the equation of the
Suppose the following statistics were calculated from data gathered from a randomized block experiment with k = 4 and b = 10:
Create the spreadsheet simulation. Use 500 simulation trials to reply the question: What is the mean profit for the simulation?
A manufacturer of car batteries claims that his batteries will last, on average, 3 years with a variance of 1 year. If 5 of these batteries have lifetimes of 1.9, 2.4, 3.0, 3.5, and 4.2 years
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