# Teacher Essay examples

937 Words Feb 25th, 2015 4 Pages
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
c) 55, 48, 55, 48, 61
d) 39, 39, 39, 39, 39
The answer is be because the number “56” is not part of the original data so it cannot be used in bootstrapping.

2. The following bootstrap output is for mileage of a random sample of 25 mustang
Use the StatCrunch data file you created to complete the remainder of this assignment.

ID Gender Class Hours Work Loans CC Debt
226 Male 1 17 15.5 0 1257
341 Male 3 15 10 12766 3254
1139 Male 1 15 21 2575 1369
5347 Female 4 13 0 0 2113
6435 Male 1 9 36 4240 1843
6790 Female 4 11 29 13855 5336
6972 Female 1 15 15.5 0 960
7060 Female 1 16 0 4241 1166
8065 Male 3 15 0 0 4115
10190 Male 1 11 26.5 3919 1350
10720 Female 3 14 16 13088 3970
12934 Female 2 15 0 0 1786
17199 Male 3 15 0 12479 3423
21650 Female 4 11 22 14605 6695
21813 Male 1 11 23 2615 1443
23858 Male 3 13 0 0 0
27197 Male 4 15 13.5 16306 7785
27856 Female 4 12 17 15530 4992
29490 Male 2 12 0 0 2941
30229 Female 3 15 0 0 3311
30298 Male 4 18 0 0 2593
30895 Female 1 19 0 2763 0
31670 Male 3 16 0 11227 4698
33476 Female 4 3 36.5 0 3712
34151 Male 1 9 29 3426 1657
34543 Male 2 13 0 6831 3414
38144 Female 4 16 0 0 2518
38200 Female 4 15 17.5 0 8496
39541 Male 2 8 28 7499 3515
45931 Female 4 7 0 0 4976

5. Construct a bootstrap distribution of the credit card debt data from your sample using 3000 resamples.

a) Paste a copy of your distribution here. (With a PC, you can press the control-alt-fn-F11 keys to copy the window showing the distribution.)

b) What is the mean of your original sample? 3146.01%

c) What is the 95% confidence interval estimate of the population