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##### (Points: 10) Suppose the profit the Honda...

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(Points: 10) Suppose the profit the Honda dealership makes on the next 5 Accords it sells are 408 979 693 662 1,309 What is the average profit on these cars? Answer Save Answer 2. (Points: 10) Suppose the following data show the introductory interest rates on a sample of 5 credit cards 6.0 1.8 3.6 5.7 4.2 Calculate the standard deviation of the sample. Note: the numbers may be different from the last problem. (please express your answer using 2 decimal places) Answer Save Answer 3. (Points: 10) There were many car accidents following the snow in Little Rock on Jan. 6. An insurance company who offers automobile insurance had the following number of claims for the following amounts: 21 claims of $500, 14 claims of $1100, 9 claims of $1700, 6 claims of $2400 and 3 claim of $3900. What was the average claim size? (please round your answer to 1 decimal place) Answer Save Answer 4. (Points: 10) A stock analyst assigns the following probability distribution to the possible earnings per share (eps) of a company: he believes there is a probability of 0.29 that eps will be 1.04, a probability of 0.37 that eps will be 1.30, and otherwise eps will be 1.52. What is the expected value of the eps? (please express your answer using 2 decimal places) Answer Save Answer 5. (Points: 10) Suppose that an individual stock?s return is normally distributed with a mean of 10% and a standard deviation of 8%. What is the probability that the stock?s return will be at least 16%? (please round your answer to 4 decimal places) Answer Save Answer 6. (Points: 10) The average amount of debt families have is 2.5 times their annual income with a standard deviation 0.75 times their annual income. How much debt does a family have to have (relative to their annual income) to be in the top 5% with the LOWEST debt load? (please round your answer to 2 decimal places) Answer Save Answer 7. (Points: 10) A country club would like to have an idea concerning the average amount its members spend on food and beverage in a given month. In a sample of 70 members, the average amount spent on F&B was $378 with a standard deviation of $81. Find the LOWER bound of the 99% confidence level of the average amount spent on F&B. (please express your answer using 2 decimal places) Answer Save Answer 8. (Points: 10) In a survey of 200 publicly-traded companies, the average price-earnings ratio was 18.5 with a standard deviation of 8.2. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past value of 16.8, the null and alternative hypotheses would be which of the following? a. b. c. d. e. f. g. h. i. j. k. l. Save Answer 9. (Points: 10) To determine whether high blood pressure affected whether a person had a stroke, a sample of 123 people who had had strokes are examined. In the sample, 38% had high blood pressure. If we were to test the hypothesis at the 10% level of significance that at least 30% of the people who have had strokes have had high blood pressure, what is the test statistic? (please round your answer to 2 decimal places) Answer Save Answer 10. (Points: 10) To determine whether high blood pressure affected whether a person had a stroke, a sample of 144 people who had had strokes are examined. In the sample, 35% had high blood pressure. If we were to test the hypothesis that at least 32% of the people who have had strokes have had high blood pressure (using the 10% level of signficance) what is the critical value? (please round your answer to 2 decimal places) Answer Save Answer 11. (Points: 10) In a sample of 80 people who have had strokes, the average cholesterol level was 250 with a standard deviation of 70. In order to test the hypothesis (at the 5% level of significance) that the average cholesterol level of people who have had strokes was at least 240, what is the p-value? (please round your answer to 4 decimal places) Answer Save Answer 12. (Points: 10) In an effort to reduce energy costs, a major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for 1 week has been $265. To determine whether the changes have signficantly reduced costs, the university takes a sample of 50 classrooms. They find that the average cost for 1 week is $247 with a standard deviation of $60. Therefore, the p-value is 0.017. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past, what is your conclusion concerning the null hypothesis? a. Reject the null hypothesis b. Fail to reject the null hypothesis Save Answer 13. (Points: 5) What is the t-value associated with 18 degrees of freedom and 10% in the tail? (please round your answer to 3 decimal places) Answer Save Answer 14. (Points: 10) The number of gallons of paint that Home Depot sells in a given day is normally distributed with a mean of 175 gallons and a standard deviation of 40 gallons (I realize that the distribution is probably different for weekends compared to weekdays, but just assume everyday has the distribution). In a sample of 126 days, what is the probability that the average number of gallons sold will be 170 or less? (please round your answer to 4 decimal places),Thank you so much!

Paper#11451 | Written in 18-Jul-2015

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