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The computer database GROWCO describes the characteristics of 100 companies identified by Fortune as among the fastest growing. Three of the variables listed are (1) estimated stock price/earnings ratio next year, (2) annual revenue growth (as a percentage), and (3) annual earnings per share growth (as a percentage)
a. Determine the least-squares regression equation for y next year's price/earnings ratio estimate as a function of x1 = annual revenue growth and x2 = annual earnings per share growth. Interpret each of the partial regression coefficients.
b. At the 0.05 level, is the overall regression equation significant?
c. Use the 0.05 level in concluding whether each partial regression coefficient differs significantly from zero.
d. Construct a 95% confidence interval for each partial regression coefficient in the population regression equation.
If a random sample is to be drawn from a population consisting of 5000 sampling units with a variance of 20% and a desired standard error of 1.6%. What is the optimal sample size?
Find a 99% confidence interval for the mean pH in rainfall and interpret the interval and what assumption must be made for the confidence interval to be valid?
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The table shows the percentages of income levels for each type of animal owned. Are these row percentages, column percentages, or table percentages?
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The data was used to make inferences regarding the other students taking the course. Construct a 95% confidence interval estimate. Explain your findings so that your non-quantitative partner will understand them. Their data is below:
Find the probability that a randomly selected households access the Internet in 2010-2011 - Calculate the mean and standard deviation for data.
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