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19. A consumer analyst collected the following data on the screen sizes of popular LCD televisions sold recently at a large retailer:a. Does there appear to be a linear relationship between the screen size and the price?b. Which variable is the "dependent" variable?c. Using statistical software, determine the regression equation, interpret the value of the slope in the regression equation.d. Include the manufacturer in a multiple linear regression analysis, using a "dummy" Hint You will need to us a set of indicator variables.f. Make a plot of the residuals and comment on whether they appear to follow a normal distribution.e. Plot the residuals versus the fitted values. Do they seem to have the same amount of variation?
Create an example of an application oriented binomial experiment. You are to give the scenario which should include an "n" and "p".
Draw the histogram for these data using an initial class boundary of , an ending class boundary of , and classes of equal width.
Suppose a random sample of size 64 is drawn from a population with a mean of 277. If 90% of the time the sample mean is less than 280, what is the population standard deviation?
The US Mint selects ten pennies from the production line to test the hypothesis that the mean weight of each penny is 5 grams. The normally-distributed weights (in grams) of these pennies are as follows:
The standard deviation of the monthly growth rates will remain 60%. Is the increased investment growth worth the consulting fee?
Time closely follows a normal distribution with a mean of 500 seconds and a standard deviation of 72 seconds. What percent of kiosk users take between 600 and 720 seconds?
Make a scatter plot, illustrate the regression lines. Determine the correlation coefficient between husband’s and wife’s education for couples in which wife is employed full time?
If a weather center monitors and calculates the average number of tornadoes that pass through Topeka, Kansas each year, what type of variable would they investigating?
A teacher figure that final grades in the statistics department are distributed as A,25%, B, 25%, C, 40%, D, 5%, F, 5%. At the end of the randomly selected semester, the following number grades were recorded.
Using the Census data, the OH Registry of Motor Vehicles reveal the subsequent about the Autos owned by the 10 families residing in Smallville.
What is the 90% confidence interval estimate of the difference between two population means.
Jeweller desires to know how many of each item to make each week to maximize profit. Create the integer programming model for this problem (written in format similar to way Problems 1 and 2 were presented).
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