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The time between accidents in a day in town A is given by T and the time between accidents in a day in town B is given by S. The joint density function for T and S is f(t,s)=e^ -(t+s) , for t≥0 and s≥0.
(a) Calculate the expected value of T.
(b) Calculate the expected value of S
(c) Calculate the expected value of 2T+3S.
Weekly closing prices of Hewlett-Packard stock from October 1995 to February 1996 are listed below, given in sequential order and rounded to the nearest dollar:
state (i) the independent variable or variables, and their levels where appropriate, (ii) the dependent variable(s), and (iii) what category of research design is being used:
Extensive laboratory tests have failed to prove any deleterious side effects of the new painkiller lexaprine. We conclude that lexaprine is safe for human.
Construct an Excel spreadsheet performing an ANOVA analysis for a randomized complete block design involving four samples hybridized simultaneously
What are the two variables of interest? For each variable, state whether it's scale or ordinal.- Calculate the Spearman correlation coefficient for these two variables.
Construct a relative frequency histogram plot for the homeownership data given in the table for the years 1985, 1996, and 2002. What major differences exist between the plots for the three years?
Use a two proportion z-test to perform the required hypothesis test. State the conclusion.
The Airline Quality Rating Study published by the U.S. Department of Transportation reported that in a recent year, Airtran led the nation in fewest occurrences
the average size of a home in 2003 was 2313 square feet according to the national association of home builders and
suppose 60 of american adults believe martha stewart is guilty of obstruction of justice and fraud related to insider
Use a 3-period moving average to make in-sample forecasts. Compute the resulting MSE and MAD.
In a certain? country, the true probability of a baby being a boy is 0.526. Among the next five randomly selected births in the? country
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