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Professor Smith took a sample of 185 students from her morning class and a sample of 147 students from her evening class. On Exam 1, all those sampled from the morning class got a 68 while those sampled from the evening class averaged a 70.2 with a variance of 125.5. If professor Smith combines these two samples...
1. What is the combined Exam 1 average?
2. What is the combined Exam 1 median? What is the shape of the combined Exam 1 grade distribution? (I don t understand how to find median with no data points)
3. What is the combined standard deviation?
(a) Show that E [X(X - 1)] = µ(µ - 1) + σ 2 (b) Show that E [(X - c) 2 ] = (µ - c) 2 + σ 2 where c is an arbitrary constant.
describe the major diversity trends facing organizations and how organizations might use various od interventions to
He then raised 10 to the power of the endpoints of the interval to get back to dollars. He claims that this is a 95% confidence interval for mean sales. What do you think?
the waiting time at a certain bank is approximately normally distributed with a mean of 3.7 min and a standard
Perform a sensitivity analysis on the optimal decision and summarize your findings. In response to which model inputs is the expected profit value most sensitive?
Examining more than one independent variable. Would using several t-tests be appropriate test to use? If not, what would appropriate test be and why?
Lebesgue measure λ is absolutely continuous with respect to counting measure c on [0, 1], which is not σ-finite. Show that the conclusion of the Radon-Nikodym theorem does not hold in this case (there is no "derivative" dλ/dc having the properties..
Identify the critical points and determine their nature (local max, local min, saddle, degenerate) using the Hessian of teh function f(x,y,z) = x^2+y^2+2z^2+xz
a researcher believes that the percentage of people who exercise in california is greater than the nation exercise
a box contains four tickets labeled 0136. the chance that the sample sum of the labels on the tickets in three
Describe a business situation that you have had or might face that will benefit from the use of confidence intervals?
i have two questions i need help with. please show me how to obtain the answers. they are in the attachment. thank
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