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Construct a grouped frequency distribution for the data given below:
184 174 180 172 184 175 180 178 183 180
173 180 182 173 172 179 182 180 172 186
In this assignment, you develop two purpose statements using the same data set (different purposes, same data) and will use regression and two sample hypothesis testing to analyze the same set of data. For example, you may want to determine if there ..
Test the assumption that the more experienced consultant has higher satisfaction ratings at the 5% significance level. Show all steps.
The mean sat verbal score is 401, with a standard deviation of 97. Use the empirical rule to determine what percent of the scores lie between 207 and 498.
Estimate with 90% confidence the mean number of weeks out of town, assuming that the population is normally distributed with a standard deviation of 6 weeks.
Describe a research problem that would benefit from Factor Analysis. What are the variables and what would you hope to achieve?
find the minimum sample size you should use to assure that your estimate of will be within the required margin of error
Develop a multiple linear regression equation that describes the relationship between tenure and the other variables in the chart above. Use the Analysis Toolpak located in Excel to perform this multiple regression.
Assume that we randomly select 15 teachers who have recently left their profession. Find the probability that at least 6 of them were laid off.
A newspaper ad for a manager trainee position contained the statement "Our manager trainees have a first-year earnings average of $20,000 to $24,000." Do you think that the ad is describing a confidence interval? Explain your answer.
A particular candidate claims she has the support of at least 60% of the voters in her district. A random sample of 150 voters yields 87 who support her.
Find the probability that a randomly selected employee earns less than $5.43.
If a member of the sales force submits an entertainment expense (dinner cost for four) of $190, should this expense be considered unusually high (and possibly worthy of investigation by the company)?
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