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The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. Find the correlation coefficient between hours studied and final exam scores. Is there a weak or strong, positive or negative correlation between hours studied and final exam scores?
Hours x 3 5 2 8 2 4 4 5 6 3
Scores y 65 80 60 88 66 78 85 90 90 71
Freight car loadings over an 18-week period at a busy port are: Compute a linear trend line for freight car loadings:
A fashion student was interested in factors that predicted the salaries of catwalk models. She collected data from 231 models.
Calculate te covarience anf the correlatio coeficient. Comment on the relationship between x and y Determine the least squres line. Draw the scatter diagram and plot the least squres line
Assume that a computer password for a computer account is to consist of 2 letters followed by 2 digits. Determine the number of possible passwords in the case that repetition is permitted and in the case that repetition is not permitted.
Management of a golf ball company has carefully screened and selected 12 dozen golf balls, and it is agreed that this sample contains 15 nonconforming balls (all for various cosmetic reasons).
Analyze the resources and capabilities of the two labor markets of Ireland and Singapore and which place to locate my pharmaceutical company.
As a health care manager, what are some benefits of applying probability concepts to solve business-related problems? Would business decisions suffer without probability concepts? Explain.
Identify an organization and provide an example of strategic planning and one example of functional-level planning. What are the differences in decision-makers, risk, cost, timeframe, and profit potential of decisions being made at various levels ..
The dependent variable is hygiene score in a restaurant in a quarter and grade cards introduction has been shown to improve average grades in mandatory counties and voluntary counties.
Facebook sold shares to investors at $38 each in its IPO. One year later, its stock price was hovering around $26. What was the percentage drop in Facebook shares in its first year as a public company?
Yvonne had employment income of 46,200, as well as income from an unincorporated business of 13,500. A rental property owned by Yvonne experienced a net loss of 2,350.
What are the steps espoused by the textbook (or instructor) for formal hypothesis testing? Explain why the sequence is important?
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