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Data were collected on the number of employees and whether or not the employees were unionized (1 = yes, 0 = no) for a sample of companies to investigate factors that affect the size of bonuses.  Based on the results shown, which of the following statements is true?  

A company studying the productivity of its employees on a new information system was interested in determining if the age (X) of data entry operators influenced the number of completed entries made per hour (Y).  The regression equation is .  Suppose the actual completed entries per hour for an operator who is 35 years old was 8.  The residual is _______.

One division of a large defense contractor manufactures telecommunication equipment for the military.  This division reports that 12% of non-electrical components are reworked. Management wants to determine if this percentage is the same as the percentage rework for the company’s electrical components.  Based on a random sample of 450 electrical components, they find that 46 had to be reworked. The 99% confidence interval is ________________________.

EU (European Union) countries report that 46% of their labor force is female. The United Nations wants to determine if the percentage of females in the U.S. labor force is the same.  Based on a sample of 500 employment records, representatives from the United States Department of Labor find that the 95% confidence interval for the proportion of females in the U.S. labor force is .357 to .443. Which of the following is the correct interpretation?

A sample of 33 companies was randomly selected and a multiple regression model was performed using average annual bonus and trust index (scale of 0 – 100) to explain turnover rate.  According to the output below, what is the F statistic to determine the overall significance of the estimated is ________________________ .  

Suppose the correlation, r, between two variables x and y is -0.44.  What percentage of the variability in y cannot be explained by x?

The time it takes to process phone orders in a small florist/gift shop is normally distributed with a mean of 6 minutes and a standard deviation of 1.24 minutes.  What cutoff value would separate the 2.5% of orders that take the most time to process?

Recent statistics report that the national rate of unemployment among persons with disabilities is 14.5%.  The local government of a small city samples 200 individuals with disabilities and finds that 44 are unemployed.  The 99% confidence interval for the unemployment rate among persons with disabilities in their city is ________________________.

Selling price and amount spent advertising were entered into a multiple regression to determine what affects flat panel LCD TV sales.  The regression coefficient for Advertising was found to be +3.0926, which of the following is the correct interpretation for this value?

In a metal fabrication process, metal rods are produced to a specified target length of 15 feet.  Suppose that the lengths are normally distributed.  A quality control specialist collects a random sample of 16 rods and finds the sample mean length to be 14.8 feet and a standard deviation of 0.65 feet.  The standard error of the mean is ________________________ .