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Explain what the coefficient of determination, R^2 (R-squared), measures. How is it related to the sample correlation coefficient?
Fix-It Copiers advertises mean time of 100 minutes for office calls with standard deviation of 25 minutes. What percentages of calls are completed?
The number of widgets produced by 9 employees in an eight hour shift is recorded as: 135, 120, 116, 119, 121, 125, 135, 131, 123. What is the median of the number of widgets produced presented above?
An element E has a constant failure rate (lamda) and a reliability at time t of R(t)=p, if p=0.2 and 0.8, What is the effect on Rs(t), and basic reliability, serial MTBF, of adding additional elements to the series baseline system containing a sin..
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
Determine the critical path and project completion time.
At significance levels of .05 and .01 test H 0 : the factors A and B are independent.
What is the probability that a particular driver had exactly two speeding violations?
Given are the numbers of times the machine was used over each of the last 30 days. Find out the mean number of times the machine was used per day.
Determine probability, P(Z
John conducted his study to measure self-esteem among victims of domestic violence before and after they complete an 8-week program for abuse victims with 10 individuals. He calculated t = 1.9 from his data.
If new inspector measures 101 stampings with variance of 0.13 square inch, test at 0.05 level of significance whether inspector is making satisfactory measurements. Suppose normality.
Run a regression of Y on X in Excel and turn in the output with a note explaining what the coefficients {correlation coefficient (multiple R), standard error, t-statistic and F-statistic} mean.
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