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What is the theory underlying ANOVA? Why is it important? What are the differences between a two sample t-test and ANOVA hypothesis testing?Why do we use nonparametric tests?
Describe a psychological research situation or scenario that would use a nonparametric test. Why would the nonparametric test be used?
Using sample, determine a 98% confidence interval for mean weight of whole daily output.
From the course text and research I am able to create a frequency band with a single number (ie. 10, 20, 30, etc.). However, I am having difficulty creating the band with a number range (ie. $0-$999,999 or $1,000,000-$5,000,000).
A manufacturer of executive jet aircraft is concerned with its profit picture over the short run. It produces two different models of planes, x1 and x2. Its profits are $30,000 for each x1 and $20,000 for each x2. There are two major constraints o..
Write a brief summary of the distribution of the area of homes.
Determine 95% confidence interval evaluate for average number of years served by all Supreme Court justices?
The City Transit Authority plans to hire 8 new bus drivers. From the group of 100 qualified applicants, of whom 55 are men and 45 are women, 8 names are to be selected by lot. Suppose that Mary and John Lewis are among the 100 qualified applicants..
We desire to test at 0.05 level of significance whether modification increases the life of battery. What is our decision rule? Reject null hypothesis if calculated t is less than 1.96.
What is the smallest level of significance at which you could reject the null in favor of the alternative hypothesis?
The dealership would now like some general information based on the entire sample of vehicles. Calculate and explain the following:
City government has collected the following data on annual sales tax collections and new car registrations: Determine the least squares regression equation.
Comment on your statistical findings? Do you agree with your initial statement regarding the preference of an ANOVA over a t-test when examining more than two groups?
Conclude the finite population, correction factor.With the population size of 1,000 and a planned sample size of 200, what is the finite population, correction.
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