Illustration 14.2. The following table shows expectation of life at different ages. You are required to find out the expectation of life at the age of 16. Age (in years) Expectation of life 10 35 15 33 20 29 25 27 30 22 35 20
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- Table 6 shows the year and the number ofpeople unemployed in a particular city for several years. Determine whether the trend appears linear. If so, and assuming the trend continues, in what year will the number of unemployed reach 5 people?If you were to repeat this study for students in your school district how would you plan the study so that you can learn, as accurately as possible the true interest levels for all of the topics being asked about?If we add a constant (for example, d) to all data values, how will this affect the geometric mean? Find the relationship to this by proof and symbols.
- The following data are the score of 24 students in Midterm Examination. If JM is one of these 24 students and got a score of 80, in what percentile does her score belong?Use information that given as table: Calculation: 1. observed deaths (∑ Obs)=……………? 2. expected deaths = population rates ⅹ person-years: a) expected deaths 1950∼1954? b) expected deaths 1955∼1959? c) expected deaths 1960∼1964? 3. expected deaths (∑ Exp)=……………? 4. SMR ?This is the data for the previous question
- The MAD for the forecast developed using a weighted 2-year moving average with weights of 0.350.35 and 0.650.65 is what?Question 4 Missy Walters owns a mail-order business specializing in baby clothes. She is considering offering her customers a discount on shipping charges based on the dollar amount of the mail order. Before Missy decides the discount policy, she needs a better understanding of the dollar amount distribution of the mail orders she receives. Missy had an assistant randomly select 50 recent orders and record the value, to the nearest dollar, of each order as shown below. 136 281 226 123 178 445 231 389 196 175211 162 212 241 182 290 434 167 246 338194 242 368 258 323 196 183 209 198 212277 348 173 409 264 237 490 222 472 248231 154 166 214 311 141 159 362 189 260 a. Determine the mean, median, and mode for this data set.b. Determine the 80th percentile.c. Determine the first quartile.d. Determine the range and interquartile range.e. Determine the sample variance, sample standard deviation, and coefficient of variation.f. Determine the z-scores for the minimum and maximum values in the…Which of the following is a good prediction of the outside temperature if the number of ice cream cones sold is 70?
- The following data are annual 15-min peak rainfall intensities I (in./hr) for 9 years of record. Compute and plot the log,,-normal frequency curve and the data. Use the Weibull plotting position formula. Using both the curve and the mathematical equation estimate (a) the 25-yr, 15-min peak rainfall intensity; (b) the return period for an intensity of 7 in./hr; (c) the probability that the annual maximum 15-min rainfall intensity will be between 4 and 6 in./hr.If Reina places in the 90th percentile on an exam, then the meaning of this statement is: a. Her examination score was 90%. b. No other scores on the exam are greater than 90%. c. Al other exam scores were less than or equal to 90%. d. 90% of the other examination scores were equal to or lower than her score.Can you please help with this question? Life insurance companies are keenly interested in predicting how long their customers will live, because their premiums and profitability depend on such numbers. An actuary for one insurance company gathered data from 100 recently deceased male customers. He recorded the age at death of the customer plus the ages at death of his mother and father, the mean ages at death of his grandmothers and the mean ages at death of his grandfathers. These data are recorded in columns 1 to 5 respectively, in file LONGEVITY.xlsx. a Perform a multiple regression analysis on these data. b Interpret the coefficient estimates and their signs. c Test for the significance of all the independent variable coefficients. (alpha = 0.05) d Is the model likely to be useful in predicting men’s longevity? e Are the required conditions satisfied? Justify your answer. f Predict the longevity of a man whose parents lived to the age of 70, whose grandmothers averaged 80 years and…
