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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 […]

The Coca-Cola Company has 40% of the cola market.Determine the probability that a sample proportion for n=30 is within 0.10 of the true population proportion of 0.40, which represents the proportion of cola drinkers who prefer a Coca-Cola drink.

A local gas station collected data from the day’s receipts, record-ing the gallons of gasoline each customer purchased. The following table lists the frequency distribution of the gallons of gas purchased by all customers on this one day at this gas station

A student calculated the mean of a set of 15 numbers and gets a result of 41.6. In calculating the mean, he inadvertently entered 117 for one of the numbers into his calculator instead of 17. What is the true mean of the data?