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Let X represent the number of individuals who respond to a particular online coupon offer. Suppose that X has approximately a Weibull distribution with a = 10 and b = 20. Calculate the best possible approximation to the probability that X is between 15 and 20, inclusive.
The sample mean and variance of this new variable are called y¯ and s2y, respectively. Use the definitions of sample means and variances (in summation notation) to prove the following statements.
if the probability that event a occurs is 0.4 that event b occurs is 0.6 that event c occurs is 0.5 that both event a
use the least squares regression line from question 1. 70.509 0.293 circumference one man had his waist circumference
Nitrogen and Seagrass. The seagrass Thalassia testudinum is an integral part of the Texas coastal ecosystem. Essential to the growth of T. testudinum is ammonium.
a. Is the foreman right? If not, what is the MTBF? b. If the MTBF is indeed 72 hours, 50% of the time the TBF will be more than how many hours? c. Why is the mean of an exponential distribution larger than its median?
Determine the observed p-value for the hypothesis test and interpret this value. What does this mean?
What is the average rating for all CBC movies and How about ABN movies and BBS movies - What is your recommendation to the executives? Justify your answer referring to the relevant figures.
Below is a partial multiple regression ANOVA table. Test the overall usefulness of the model at italic alpha =.01. Calculate F and make your decision about whether the model is useful for prediction purposes.
suppose the goodyear tire company developed two new brands of tires and would like to compare the variability of the
Let A be the event that a student is enrolled in an accounting course, and let S be the event that a student is enrolled in a statistics course.
If the average tax payer who makes $140,000 per year owes the government $18,200 with a standard deviation of $1500, and the IRS receives a 1040 tax documents from a customer who earned $140,000 that claims he only owes $12,000, should the IRS sus..
Previous studies have indicated the standard deviation of annual earnings for college students is $850. How large a sample would need to be taken to estimate the mean for college students' annual earnings to within $200 with 99% confidence?
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