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P
GRADUATE INSTITUTE
Please turn in all worksheets showing how you got your answers.
Data Set A:
18 |
15 |
14 |
21 |
16 |
15 |
16 |
17 |
15 |
17 |
16 |
17 |
15 |
17 |
13 |
15 |
22 |
20 |
14 |
16 |
14 |
21 |
14 |
15 |
15 |
|
|
Truth |
|||
Honest |
Dishonest |
||
Test |
Truthful |
319 |
4 |
Lying |
12 |
9 |
What are the sensitivity, specificity, positive predictive value, and negative predictive values? Answer
Data Set B:
x |
y |
|
x |
y |
|
x |
y |
79 |
15 |
|
85 |
24 |
|
73 |
15 |
96 |
25 |
|
72 |
17 |
|
68 |
19 |
76 |
11 |
|
90 |
18 |
|
80 |
19 |
66 |
23 |
|
|
|
|
|
|
Extra Credit - pertains to Chapter 14
You sell two types of chocolate, dark and light. You know that nationally more people buy light chocolate than dark, but you are wondering if this preference is stronger in one part of the county than another. You gather information on how many tons of chocolate were sold in the western, middle, and eastern parts of the country from the CCCCC (Cross Country Commission on Chocolate Consumption). Conduct a full hypothesis test using a χ2 test at the α = .05 level.
Part of Country |
|||
West |
Middle |
East |
|
Dark |
65 |
72 |
61 |
Light |
91 |
155 |
145 |