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Consider the following exponential probability density function:
F(x) = (1/14)e^(-x/14) for x>=0
This number represents the time between arrivals of customers at the drive-up window of a bank.
a. Find f(x<=7)
b. Find f(3.5<=x<=7)
What score was earned by more students than any other score? Why? What was the highest score earned on the exam?
Calculate the mean, mode and median of the grouped data derived from the frequency distribution above. Compare the results obtained from
He would like to estimate with .05 of the true proportion with a confidence level of 90%. What is the sample size needed?
Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
Describe the distribution of the x-bars that you see in part b (shape of distribution, center, and the amount of dispersion).
A sample of twenty automobiles was taken, and the miles per gallon (MPG), horsepower, and total weight were recorded. Develop a linear regression model to predict MPG using horsepower as the only independent variable. Develop another model with weig..
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
The economists in the Obama administration suggested that the stimulus package that they recommended in early 2008 would keep unemployment under eight percent.
A major study examined the relationship between cause of death (heart attack, cancer, stroke, accident, etc.) and age. A good way to graphically represent the relationship is with
The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0. Assume 36 golfers played the course today. Find the probability that the average score of the 36 golfers exceeded 71.
Each egg was also measured for volume using a water displacement method. We wanted to know if the two methods agreed or not
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
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