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78% 16:01 Questioni lo marks] The issue of health care coverage in Namibia is becoming critical issue in health politics. Assume a large scale study was undertaken to determine who is and is not covered. From this study, the following table of joint probabilities was produced. Age Has health category insurance Does not have health insurance 25-34 0.167 0.085 35-44 0.209 0.061 45-54 0.225 0.049 55-64 0.177 0.027 If a person is selected at random, find the following probabilities 1.1 What is the probability the person has health insurance? [3] 1.2 If the person is below 55 years of age, what is the probability that he/she has health insurance [5] Leave a message X 1 78% 16:02 Question 2 [17 marks] A market research bureau asked 100 house wives who purchased Brand X washing powder how many packets they bought during a specified period. The purchases recorded were as follows: 3 3 3 9 9 20 2 22 1 1 10 16 1 46 11 10 24 10 13 1 22 14 1 7 2. 1 6 6 20 1 2. 15 3 3 23 6 15 13 15 1 1 7 1 1 1 1 1 4 19 30 N 6 17 5 22 2 23 10 22 3 6 1 3 2 3 1 N 3 23 7 24 1 3 1 1 1 1 1 14 4 11 8 4 4 9 1 6 1 6 1 13 2. 10 6 6 Leave a message X 78% 16:02 10 6 6 9 4 2 16 1 3 9 2.1. Arrange these data into an appropriate frequency distribution by using the classes [3] 2.2. Use the information in 2.1 to compute and interpret: 2.2.1. The estimated mean of packets bought during the specified period. [4] 2.2.2. The upper quartile of packets bought during the specified period. [4] 2.2.3. The coefficient of variation for packets bought during the specified period. [6] Question 3[13 marks] Telkom offers a range of telecommunication services to small businesses. A small printing business has used the services of TalkPlus (a valued added telephone services); a SmartAccess (an advertising services) and ISDN (an internet connection) for the past three years. Their annual scoand Leave a message X unit price of each service 78% 16:02 unit price of each service ae given in the following table. 2004 2005 Telkom Unit 100's Unit services price(cents/call) calls) price(cer TalkPlus 65 14 70 SmartAccess 35 27 40 ISDN 50 16 45 3.1 Use 2004 as the base period to compute and interpret the price relative for 2005 for ISDN [3] 3.2 Construct a price index to reflect the overall change in prices of the production of the items for the period 2004 - 2005. Use the Laspeyres approach. Interpret your price index. [5] Leave a message X 3.3 Construct a quant 78% 16:02 2. 67 90 77 82 3 27 75 84 98 4. 45 71 63 76 4.1 Compute the 4-period centered moving average for the quarterly sales. [4] 4.2 Compute the seasonal indexes for these quarterly earnings. [10] 4.3 Use the method of least squares from regression analysis to determine the trend line of best fit. Use the zero-sum method for coding. [10] 4.4 Using the trend line you produced in 4.3, estimate the trend value of the time series for Quarter 3 in 2014. [3] TOTAL MARKS FOR ASSIGNMENT 02: 65 MARKS END OF TUTORIAL LETTER Leave a message X