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Q1) Sample of 40 golfers illustrated that their average score on the particular golf course was 94 with standard deviation of 6.
i) Determine the 99% confidence interval of mean score for all 40 golfers.
ii) Determine the 99% confidence interval of mean score for all golfers if this is sample of 70 golfers instead of a sample of 40.
iii) Which confidence interval is smaller and explain why?
Q2) Computer software programs for solving linear programs are eagerly available. Most of these provide the optimal solution, dual or shadow price information, the range of optimality for objective function coefficients, and the range of feasibility for the right- hand sides.
Write down the advantages and disadvantages of using computer software for decision making.
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For this same sample of n = 45, find out the width of confidence interval around population mean? Illustrate all work.
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What is the probability that the sum of their scores exceeds 1200 and probability that the average of the scores of all 400 student
Compute SS, variance, and standard deviation for following population of N = 7.Scores: 8, 1, 4, 3, 5, 3, and 4. The definitional formula works well with these scores. Use the definitional formula to compute SS.
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
The standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
This model is fit to the data using the method of least squares using statistical software, and the following ANOVA table is obtained
Compute an F-statistic for each linear construct and determine its significance. Also, state what questions each of these contrasts address.
A sample of 160 workers in the downtown area classified each worker by race. A bar graph of the results is given below, but the bar for black workers in the graph below has been omitted.
A game involving a pair of dice pays you 3 with probability 17/36, costs you 2 with probability 14/36, and costs you 4 with probability 5/36. What is your probability of losing money in one play of the game?
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