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1. Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
2. How can you avoid bias when selecting samples for human services research? List the three measures of variability and provide one example of each. If in a response team, what may these measures of variability tell a team leader about individual and team performance?
The study does provide sufficient evidence to support the claim that less than 75% of college student spend less than $250 per semester on textbooks.
If an applicant is randomly selected, find the probability of a rating that is between 200 and 275.
Find out optimal assignment and calculate total minimum cost.
To test whether the significant difference between two sample variance using F-tests.
Compute the mean, standard deviation, median, and standard error for each group.
A four-year university has decided to implement new approach to teaching Statistics. Full-time and adjunct professors were surveyed to determine whether they preferred the traditional lecture approach or a computer approach to teaching Statistics.
Use the least-squares method to compute the regression of coefficients b0 and b1.
The Minitab output for the Tukey Least Significant Difference multiple comparisons is below. Which means are different and similar
The diameters of grapefruits in certain orchard are normally distributed with mean of 6.95 inches and a standard deviation of 0.75 inches. Show all work.
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
The owner of a restaurant serving Continental-style entrees has the business objective of learning more about patterns of patron demand for the Friday to Sunday weekend time period.
It is very difficult for small businesses to be successful. The Small business administration estimates that 20 percent will dissolve or go bankrupt within two years. A sample of 50 new businesses is selected. (show work) (a) What is the mean and ..
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