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If we select 7 colleges from a major and then record whether they are of 'School Type' 'Private' or not, is this experiment a binomial one? Why or why not?
What test or tests would you use to rule out chance from causing the apparent differences in these data and is there a significant correlation?
The mean wage rate for hourly workers at General Motors is [Mu=$14.25] per hour (Detroit News, April 14, 1989). Assume that the population standard deviation [s=$2.00]. What is the probability that the sample mean [x] is at least $13.80 per hour but ..
In a sample of 56 addicts, 28 were given a new drug to help them overcome their addiction, while the remaining 28 were given the current drug. The following is the output from a randomization test for the difference in the proportion of addicts suffe..
Suppose Ana has a pair of dice (the traditional six-sided kind). Let X= the difference of the largest minus the smallest number showing on the dice. Find the PMF for X.
Describe the error in the conclusion
Calculate the variance-covariance matrix of the OLS estimator of β1.β2 and β3 and verify that:
Believe the consumer advocate's claim? Explain
1.An experiment was performed on a certain metal to determine if the strength is a function of heating time (hours). Results based on 20 metal sheets are given below. Use the simple linear regression model. ∑X = 40 ∑X2 = 200 ∑Y = 70 ∑Y2 = 545 ∑XY = 3..
What are the mean earnings of males and females in this sample? Does the regression result support the claim in the news and You decide to control for age (in years) in your regression results because older people, up to a point
What statistical test should be used to analyze these data - How can internal and external validity be increased in an experiment and briefly describe the type of information that should be in an introduction.
Why do you think it's necessary to study the fundamentals of probability when learning statistics? Identify and describe an example of using probability in biostatistics
Perform a hypothesis test to address the questions
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