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A test of statistical reasoning is given to 10 students before and after an elementary statistics course. At V = 0.05, test the claim that the mean score is not affected by the course. Assume the students are randomly selected from normally distributed populations.
BEFORE: 74 83 75 88 84 63 93 84 91 77AFTER: 73 77 70 77 74 67 95 83 84 75
Please explain by using the traditional methods for testing hypotheses and showing the results of all steps in the process.
Tavern has budget of $2,000 for beer for Super Bowl Sunday. Betty desires to find out number of gallons of each brand of beer to order so as to maximize profit. Create a linear programming model for this problem.
Describe a Bernoulli experiment and give two examples. What is the connection between a Bernoulli experiment and a binomial distribution? Explain.
Let x = number of the ball obtained on any selection. Then the probability distribution for x is given by:
Is there a significant difference in the proportions of patients reporting pain relief?
What is the 95% confidence interval for the proportion of smokers in the population (to 4 decimals)?
You conduct a hypothesis test and you observe values for the sample mean and sample standard deviation when n = 25 that do not lead to the rejection of H0. You calculate a p-value of 0.0667.
Determine the expected value and standard error of the sum of 400 draws?
Forecast 2 out of sample forecasts for the final model using following data: Final Estimates of Parameters AR 1 0.9647 0.0388 24.84 0.000.
Let p represent the proportion of registered voters in the state that would vote for the Republican candidate. The standard error for the proportion of those who phoned in who answered "yes" is
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? State the null hypothesis and the alternate hypothesis.
A sales manager wants to know if the sales productivity of her east region is greater than the sales productivity of her west region
In 1,000 samples, assuming that H 0 is true, how many times would you expect to commit Type I error if:
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