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Problem: The Pratt Corporation manufactures computer terminals. The following data give the number of computer terminals produced at the company for a sample of 30 days.
24 32 27 23 33 33 29 23 28 25
21 26 31 22 27 33 27 28 29 23
31 35 34 22 26 28 23 31 27 35
Make a frequency table showing class boundaries, class midpoints, frequencies, relative frequencies, and cumulative frequencies.
What is the modal class?
Under similar driving conditions, they were tested again, using a special additive. The data are shown here. At a = 0.05, did the additive improve gas mileage? Use the Wilcoxon signed-rank test.
Develop a presentation on yourself for a sales job with a company of your choice. Relate this assignment to each of the 10 steps of the selling process.
Find the approximate percentile ranks of these scores by constructing a percentile graph (Ogive).Use the Ogive, estimate percentile of a student who scored 200 points in the test? What is the student score must be in order in the 90 percentile?
Test the hypothesis that the machines are showing difference qualities of performance. Use 5 per cent level of significance.
In each experiment, determine whether the data are obtained independently or are paired. If the data are independent, indicate the two distinct populations.
What statistical method is used to accept or reject the null hypothesis in determining if outsourcing is always beneficial? Please explain your reasons for choosing the selected method in detail and cite references (if any).
Annual interest rate in the U.S. =2% What is your percentage return from covered interest arbitrage with $650,000?
Pick a card, any card. You draw a card from a deck. If you get a red card, you win nothing. If you get a spade, you win $5.
What distribution does the number of defective chips in the sample of 500 satisfy and what is the expected number of defective chips in your sample?
Each of five boxes contains a large (but unknown) number of red and green marbles. You have been asked to find if the proportions of red and green marbles.
Construct a 99?% confidence interval to estimate the average number of flights per day handled by the system.
1. A jar contains 10 blue marbles, 5 red marbles, 4 green marbles, and 1 yellow marble. Two marbles are chosen (without replacement). (a) What is the probability that one will be green and the other red? (b) What is the probability that one will b..
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