Server A sequentially handles 30 jobs, each of whose service times are i. i.d. (independent, identically distributed) a continuous random variable with mean 50 milliseconds and a standard deviation of 10 milliseconds. Server B has an analogous workload, but its 30 jobs each have mean 52 milliseconds and standard deviation 15 milliseconds a. Estimate the probability that server A finishes in less than 3980 milliseconds.
b. Estimate the probability that server B finishes in less than 3980 milliseconds.
c. Suppose that the two random variables Xi ~ N( i,Æ¡?), for i E {1,2}, are independent. What is EX1-X2)? What is Var(X-%)?
d. Estimate the probability that server B finishes before A. You may use without proof the fact that, if X1 and X2 are independent normal random variables, then aXi + bX2 is also normal, for any constants a and b (and that the analogous statement holds for random variables that are approximately normal)
e. If you did part (d) correctly, you will discover that B has a nonnegligible chance of finishing earlier than A, even though A has the smaller mean completion time. Explain how this is possible.

1.the index finger on your right hand types the f r v 4 j u m 7 h y 6 n lo.9 j u 7 m g t 5 b 2.if you need to multiply 400, 2, and 1 ½, what would you type on the numeric keypad? 400*2*1.5 400/2*1.5 400/2/1.5 400*2*1½ 3.select all examples of proper keyboarding technique. rest your fingers gently on the home row or home keys. slouch in your chair. rest your palms on the keyboard. relax your fingers. keep your hands lower than your elbows.

1. the program must provide following functions to extract some statistics. note that the data_list parameter specified in these functions may be the same for all functions or different for different functions—that is your choice. a skeleton file is provided on mirmir. a) open_file()prompts the user to enter a year number for the data file. the program will check whether the year is between 1990 and 2015 (both inclusive). if year number is valid, the program will try to open data file with file name ‘year.txt’, where is the year. appropriate error message should be shown if the data file cannot be opened or if the year number is invalid. this function will loop until it receives proper input and successfully opens the file. it returns a file pointer and year. i. hint: use string concatenation to construct the file name b) read_file(fp)has one parameter, a file pointer read. this function returns a list of your choosing containing data you need for other parts of this project. c) find_average(data_list) takes a list of data (of some organization of your choosing) and returns the average salary. the function does not print anything. hints: i. this is not the average of the last column of data. it is not mathematically valid to find an average by finding the average of averages—for example, in this case there are many more in the lowest category than in the highest category. ii. how many wage earners are considered in finding the average (denominator)

Write a 3-4 page apa formatted paper comparing your organization’s it strategy with the best practices outlined in your course text. content should include, but not be limited to: developing and delivering on the it value, developing it strategy for the business value and linking it to business metrics. your paper should include an abstract and a conclusion and a reference page with 3-5 references