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Question: Wage web exhibits salary data obtained from surveys. It provides compensation information on more than 170 benchmark positions, including finance positions. It recently reported that salaries of chief finance officers (CFOs) ranged from $127,735 to $209,981 (before bonuses). Suppose the following data represent a sample of the annual salaries for 25 CFOs. Assume that data are in thousands of dollars.
a. Using 11 classes, construct a cumulative frequency distribution.
b. Determine the proportion of CFO salaries that are at least $175,000.
c. Determine the proportion of CFO salaries that are less than $205,000 and at least $135,000.
Compute the probability that debt for a randomly selected borrower with good credit is more than $18,000?
Use MegaStat's output for multiple regression to determine the multiple regression equation
Plot a CDF based on these data. What kind of theoretical distribution do you think would be appropriate for these data? Why?
Creating null and alternative hypotheses of difference based on the following. A company introduces a new product and wants to find out if males or females.
The times to failure of certain electronic components in accelerate environment tests are 15, 28, 3, 12, 42, 19, 20, 2, 25, 30, 62, 12, 18, 16, 44, 65, 33, 51, 4, and 28 minutes. Looking upon these data as a random sample from an exponential popu..
suppose sample size n100 sample proportion .25 the null hypothesis is that the true proportion 0.20 and the
Write the null and alternative hypotheses and calculate the test statistic, determine the critical value whether or not there has been an improvement.
The director for training at a company that manufactures electronic equipment is interested in determining whether different training methods have an effect on the productivity of assembly line employees.
Evaluate the importance of research and statistics in making business and industry decisions - calculate and analyze descriptive and inferential statistics during the decision making process using popular software packages.
Visit the CDC National Center for Health Statistics to explore national vital statistic results with a focus on birth rates, death rates and cancer rates. Next, explore the vital statistics in you respective state health departments.
Consumer Reports magazine tested paints. The table below shows the overall quality score and cost in dolllars per gallon. Test for a correlation. Based on these results, do you get better quality paint by paying more?
Calculate the correlation coefficient and determine whether it is statistically significant using a two-tailed test at the .05 level.
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