Statcrunch

StatCrunch Assignment 2

First save this file to your computer. Answer each of the following questions, then resave the file along with your answers and turn it in using the assignment link in Module 3, Activity 4. the first four problems are worth 10 points each. Problems 5 and 6 are worth 30 points each.

1. If the original sample is 48, 55, 43, 61, 39, which of the following would not be a possible bootstrap sample? Explain why it wouldn’t be.

a) 48, 55, 43, 61, 39

b) 43, 39, 56, 43, 61 This is the correct answer because 56 is not in the original sample

c) 55, 48, 55, 48, 61

d) 39, 39, 39, 39, 39

2. The following bootstrap output is for mileage of a random sample of 25 mustang cars.

Based on a 90% confidence interval, which of the following would not be a plausible value of the population mean, µ? Explain why it wouldn’t be.

a) 60.01

b) 80.01 This is the answer, it’s equal to a value established as above the 95th percentile

c) 55

d) 52

3. Which of the following p-values would provide more evidence in support of the alternate hypothesis and against the null hypothesis? Explain your answer.

a) 0.15

b) 0.85 I would choose this since it is the clear outlier

c) 0.009

d) 0.05

4. 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 suffering relapses.

a) What is the difference in proportions in the original data? I have absolutely no clue how to get that answer from this graph

b) What is the p-value and what does it mean in terms of this specific problem? Again, no clue

In StatCrunch Assignment 1A, you selected a random sample of 30 StatCrunch U students and gathered some survey data regarding those students. Use the StatCrunch data file you created to complete the remainder of this assignment.

5. Construct a bootstrap...