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Suppose that X1 and X2 denote a random sample of size 2 from a gamma distribution, i.e., Xi ∼ Gamma(2, 1/2) and X1 and X2 are independent.(a) Find the pdf of Y =sqrt(X1 +X2 )
(b) Find the pdf of W = X1/X2
A local ice-cream store receives an average of 3 customers per hour. Assume that the arrival events are well described by Poisson distribution. The cashier wants to leave the store to run an errand. The manager computes the expected time T between..
Assume that you work for a chain of food stores and that you are interested in how your company's prices compare with your competitors. Since a food store carries many items, it is likely that you are higher on some products than on others. T..
Cash required for a year must be withdrawn from the bank and set aside at the beginning of that year. The Foundation is scheduled to shut down on January 1, 2014. On that date, all cash left over in its checking account will be withdrawn and paid to ..
Assume that the significance level is α=0.05. Use the given information to find the P-value and the critical value(s). The test statistic of z=1.62 is obtained when testing the claim that p>0.7. P-value equals =
Share one real-worldbinomial distribution situation and one real-world Poisson distribution situation. Be sure to explain why each example is defined as binomial or Poisson. How would you characterize the difference between the two types of distribut..
5. A laboratory weights filters from a coal mine to measure the amount of dust in the mine atmosphere. Repeated measurements of the weight of dust on the same filter has a standard deviation of σ = 0.08 milligram (mg) and mean 123 mg.
State the statistical assumptions of this test and using the data set and variables you have selected, use SPSS to calculate the Mean and Median.
A survey of 791 vacationers from the United States found
A medical researcher wishes to estimate what proportion of babies born at a particular hospital are born by Caesarean section. In a random sample of 100 births at the hospital, 34% were Caesarean sections. Find the 95% confidence interval for ..
Calculate the descriptive statistics fromthe data and display in a table. Be sure to comment on the central tendency,variabilityand shape for housing price and two additional variables - Draw a graph that displays the relative share of bedrooms in ..
q1. in a pure exchange economy with two goods g and h two traders amos and elise have cobb-douglas utility functions.
A nurse researcher wanted to evaluate blood pressure in a set of patients/research subjects at 1, 3, and 6 months. What test would be most appropriate? Independent t-test: ANVOVA, RM-ANOVA or ANCOVA
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