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The top 25 companies ranked by market capitalization operating in the washington DC, area along with the year they were founded and the number of employees are given below. Make a stem-and-leaf display of each of these variables and write a short description of your finding.
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
Researcher asked group of 30 students - 12 of them supported change, 13 of them didn't, and 5 had no opinion. This is not binomial model as?
The distribution of lifetimes for a certain type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the 33rd percentile of the distribution of lifetimes.
Fix-It Copiers advertises mean time of 100 minutes for office calls with standard deviation of 25 minutes. What percentages of calls are completed?
Determine the distributions given below represent a probability distribution. Justify your answer.
So construct a multiple regression model for predicting the crime rate based upon various explanatory variables unemployment rate, median income, education level.
Given the same significance level, a ________ value of t will be required to reject the null hypothesis compared to the value of z required for rejection.
Modify above problem (Problem 8th) so that each hardware vendor now demands seventy-five (75) units. Any units available from the vendors that are not shipped cost nothing.)
Determine out the regression equation. Determine the estimated sales if 40 contacts are made.
Determine the following areas under standard Normal distribution curve.
What is the population mean? What is the best estimate of that value?
If someone had x=2 job changes, what does the least squares line predict for y, the annual salary?
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