Two students randomly selected from a statistics class, and it is observed whether or not they suffer from math anxiety. Indicate which is simple and which is compound. A. Both students suffer from math anxiety. B. Exactly one student suffers from math anxiety. C. The first student does not suffer and the second suffers from math anxiety. D. None of the students suffer from math anxiety.

Clark Heter is an industrial engineer at Lyons Products. He would like to determine whether there are more units produced on the night shift than on the day shift. Assume the population standard deviation for the number of units produced on the day shift is 21 and is 28 on the night shift. A sample of 54 day-shift workers showed that the mean number of units produced was 345. A sample of 60 night-shift workers showed that the mean number of units produced was 351. At the .05 significance level, is the number of units produced on the night shift […]

Under what circumstances should at distribution be used rather than the normal distribution to look up areas or probabilities associated with distances from the mean? To complete questions 9 and 10, use the bpstudy.sav file. Select three variables from the dataset bpstudy.sav. Two of the variables should be good candidates for a correlation, and the other variable should be a poor candidate for a correlation. Good candidates are variables that meet the assumptions (such as normally distributed, reliably measured, interval-ratio level of measurement). Poor candidates are variables that do not meet assumptions or that have clear problems (such as restricted range, extreme outliers, […]

19 percent of the employees in a company have managerial positions, and 29 percent of the employees in the company have MBA degrees. Also, 64 percent of the managers have MBA degrees. Using the probability formulas, find the proportion of employees who either have MBAs or are managers.

Problems at major companies. The Organization Development Journal(Summer 2006) reported on the results of a survey on human resource officers (HROs) at major Employers located in a southeastern city. The focus of the study was employee behavior, namely absenteeism, promptness to work, and turnover. The study found that 55% of the HRSOs had problems with employee absenteeism; also 41% had problems with turnover. Suppose that 22% of the HROS had problems with both absenteeism and turnover. Use this information to find the probability that an HRO officer selected from the group surveyed had problems with either employee absenteeism or employee […]