A publisher plans to boost the sales of its most popular magazine by sending out promotional mails. We refer to a customer as a responder if he/she subscribes to the magazine for the next year after receiving a promotional mail. Otherwise the customer is referred to as a non-responder. Denote responder by C1 and non-responder by C2. The cost of promotional mail is $3 per customer. The cost of printing and delivering the magazine is $80 per year. With the promotion a customer pays $120 per year for the magazine. Compute the average misclassification costs using the confusion matrix below. Actual Class C1 C2 C1 20 230 Predicted Class C2 3 1017 Round you answers to 3 digits after the decimal point. Cost of classifying a responder as a non-responder is $ 3 per customer. Cost of classifying a non-responder as a responder is $ 40 per customer. The average misclassification cost is $ 0.638

A polling company reported that 33% of 2286 surveyed adults said that they play football. Complete parts (a) through (d) below. C a. What is the exact value that is 33% of 2286? The exact value is (Type an integer or a decimal.) b. Could the result from part (a) be the actual number of adults who said that they play football? Why or why not? O A. No, the result from part (a) could not be the actual number of adults who said that they play football because that is a very rare activity. O B. Yes, the result from part (a) could be the actual number of adults who said that they play football because the results are statistically significant. O C. Yes, the result from part (a) could be the actual number of adults who said that they play football because the polling numbers are accurate. O D. No, the result from part (a) could not be the actual number of adults who said that they play football because a count of people must result in a whole number. c. What could be the actual number of…

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The initial population of a town is 5 000, and it grows with a doubling time of 8 years. What will the population be in 12 years?

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i Xi CT CONTI 1 2 -0.75 1.30 -1.55 1.25 As a reminder: When calculating answers, please use at least 4 decimals for intermediate calculations. 13579 3 5 4 7 5 Yi -2.50 9

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Each term (3 months) the current group of economics students completed a questionnaire as to how much they would spend on new purchases compared to how much they would save/pay off bills, if they suddenly and unexpectedly received a check for $1,000. The average MPC is shown in the table below. Month in which student poll was taken Average of students’ responses as MPC March 0.41 June 0.30 September 0.22 December 0.56   What do these MPC’s imply about the students’ thinking over the course of the year?   (Enter response here.)   What is likely happening in the economy during the same period of time?

A group of participants was surveyed and the information collected shown in the partially completed contingency table below regarding the site of skin cancer. Firstly, calculate the missing values. Melanoma Other Total Head U 43 X Trunk 52 V 98 Extremities 142 112 Y Total 229 W Z Now, using the completed contingency table, select the statements from the following list that are true. Note: a statement is true only if the value you calculated from the completed contingency table, when rounded to the same number of decimal places as in the statement, is the same as the value in the statement. 18.1% of skin cancers appear on the head 71.4% of skin cancers were melanomas or appeared on the head Given the skin cancer is something other than melanoma, the probability it is not on the extremities is 0.443 Of skin cancers appearing on the trunk, 46.9% are not melanomas

Write down the name of the sections of the report. (a) What questions are answered in each section? Write one specific question and one general question for each section.