Math 533 Final Exm Answers

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MATH 533 Final Exm Click Link Below To Buy: http://hwcampus.com/shop/math-533-final-exm/ Or Visit www.hwcampus.com 1. (TCO A)Consider the following sample data on the age of the 30 employees that were laid off recently from DVC Inc. 21 38 20 26 37 52 37 24 45 20 50 49 44 30 29 42 56 46 60 30 32 25 47 55 38 25 20 29 32 30 a. Compute the mean, median, mode, and standard deviation, Q1, Q3, Min, and Max for the above sample data on age of employees being laid off. b. In the context of this situation, interpret the…show more content…
Does the sample data provide evidence to conclude that the installation of the traffic light is warranted (using  = .10)? Use the hypothesis testing procedure outlined below. a. Formulate the null and alternative hypotheses. b. State the level of significance. c. Find the critical value (or values), and clearly show the rejection and nonrejection regions. d. Compute the test statistic. e. Decide whether you can reject Ho and accept Ha or not. f. Explain and interpret your conclusion in part e. What does this mean? g. Find the observed p-value for the hypothesis test and interpret this value. What does this mean? h. Does this sample data provide evidence (with  = 0.10), that the installation of the traffic light is warranted? (Points : 24) Question 1. 1. (TCO E) Management at New England Life wants to establish the relationship between the number of sales calls made each week (CALLS, X) and the number of sales made each week (SALES, Y). A random sample of 18 life insurance salespeople were surveyed yielding the data found below. CALLS SALES PREDICT 57 18 50 18 2 100 61 18 48 14 58 17 48 13 29 9 43 12 51 17 32 12 59 21 32…show more content…
Find and interpret βˆ1in the context of this problem. c. Find and interpret the coefficient of determination (r-squared). d. Find and interpret coefficient of correlation. e. Does the data provide significant evidence (= .05) that the number of calls can be used to predict the sales? Test the utility of this model using a two-tailed test. Find the observed p-value and interpret. f. Find the 95% confidence interval for mean sales for all weeks having 50 calls. Interpret this interval. g. Find the 95% prediction interval for the sales for 1 week having 50 calls. Interpret this interval. h. What can we say about the sales when we had 100 calls in a week? (Points : 48) 4 Question 1. 1. (TCO E) Sam Smith, owner and general manager of Campus Stationery Store, is concerned about the sales behavior of a scanner at the store. He understands that there may be many factors, which may help explain sales, but he believes that advertising and price are major determinants of sales. Sam collects the data given below with Y=SALES (# of sales), X1=ADS (# of ads), X2= PRICE ($) SALES ADS PRICE Predict ADS Predict PRICE 33 3 125 10 130 61 6 115 70 10 113 82 13 130 17 9 145 24 6

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