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How can the binomial distribution be used in a business situation? What type of data would you use and what would you learn from this?
Make a graph to visualize the problem and state, without doing the calculations, whether the p-value of the test
We wish to determine whether the homicide rate is different in different parts of the country and, if it is different, what is the pattern. We have data on 36 states - 9 each in the four regions Northeast, Midwest, South and West.
When calculating correlation coefficient, what does a value of -2 indicate? Strong negative correlation, Weak negative correlation.
Employer wishes to interview only those applicants who score in top 15%. What must cut-off score be for interviews?
Why do we use graphical displays of the data from our research, such as Pareto Charts, Bar Charts, Pie Charts, Flow Charts, or Process Control Charts?
A metropolitan school system consists of three school districts-norths, south, central. The north district contains 25% of all students, the south district contains 40%, and the central district contains 35%.
The sample standard deviation of the first set of strengths was 8.2 ksi, the second set's S value was 9.8 ksi, and the S value for the 25 differences in strengths was 3.3 ksi.
Explain in your own words why the test statistic for Goodness-of-Fit is similar to the calculation for Population Standard Deviation.
Briefly explain how the standard deviation influences outcome of hypothesis test. How does σ influence measures of effect size?
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Suppose 72% of the drivers regularly use seat belts. You take a random sample of 10 of these drivers. What is the probability that the number regularly using seat belts is at least 7?
Which of these following statements provides the best guidance for the model building?
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