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What this function tells you about the relationship between the price and the number of cups sold?
Predict the monthly advertising cost when the number of orders is 4,999,000. (Hint: Be very careful with assigning the dependent variable for this problem) .
A random sample of light bulbs had a mean life of xbar = 587 hours. the standard deviation of the lifetime of all such light bulbs is of sigma = 36 hours
A car manufacturer has four plants, say Plants A,B,C and D. The CEO would like to know if worker ratings differ among the four plants.
Let the amount spent be the dependent variable and monthly income the independent variable. Create a scatter diagram, using a software package.
Sixty-four students in an introductory college economics class were asked how many credits they had earned in college
A researcher reads that the marital status of U.S. adults is distributed as follows: marries, 60%; single, 24%; divorced,10%; widowed 6%.
Calculate what the estimated monthly return for TWCUX would be if the monthly return for the S&P 500 were 15%.
Use these data to develop an estimated regression equation that could be used to predict the price of a hydration system given its weight.
M&Ms has more recently updated its color distribution pattern to Red: 13%, Yellow: 14%, Green: 16%, Orange 20%, Blue: 24%, Brown: 13%.
In a survey for its advertisers, a newspaper chain randomly sampled 100 readers of each of its 3 major newspapers, with the results.
Is it 95%-certain that the three mean scores of all potential players below 20, all potential players between 20 and 40, and all potential players.
A survey finds that, given the choice, 34 females prefer makes much taller than themselves, and 55 females prefer males only slightly taller than themselves.
What do you know about regression analysis? What is the regression analysis good for?
In a sample of 664 patients who received this training, suppose that 47 showed reduced allergic reactions and 17 showed increased allergic reactions.
The Iowa Department of Transportation is concerned with the use of cellphones while driving.
Use exponential smoothing with and the smoothed forecast for July is 32 and determine August and September's smoothed forecasts.
Assume there is no cyclical component (don't forget: there IS a seasonal component). Forecast the summer billing for year 5.
A study is being conducted to determine whether there is a relationship between jogging and blood pressure.
The least-squares regression line given above is said to be a line which "best fits" the sample data.
As the price of oil rises, there is increased worldwide interest in alternate sources of energy. A Financial Times/Harris Poll surveyed people in six countries
The marketing manager of a large supermarket chain would like to determine the effect of shelf space on the sales of pet food.
Scenario: Banner Mattress and Furniture Company wishes to study the number of credit applications received per day for the last 300 days.
At a recent meeting of educational researchers comparison were made between the type of college freshmen attend and the numbers who drop out.
In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20% earned B's, 30% earned C's, 20% earned D's