1. a. p(o correct)=0.2373
b. p(1 correct)=0.0791
c. p(2 correct)=0.0263
d. p(3 correct)=0.0087
e. p(4 correct)=0.0029
f. p(5 correct)=0.0009
2.
A |
-.5 |
.5 |
1.5 |
2.5 |
3.5 |
4.5 |
5.5 |
B |
.2373 |
.3955 |
.4 |
.26 |
.014 |
.15 |
0 |
3. at least one
4. not likely add 4+5
5. p( less than 3 correct)=0.8964
6. p(at least 3 correct)=0.10399
7. my score would be 30%
8. guess cause there is nothing to lose.
9. don't guess cause you need to answer and eliminate answer choices to get the questions right.
10. a. 60%
b. 70%
c. 80%
Comments (1)
Nathan Wisdom said
at 3:26 pm on Feb 15, 2011
Write-up level: 2
Mathematical Reasoning: Some evidence of mathematical reasoning.
Mathematical Concepts: Explanation shows some understanding of the mathematical concepts needed to solve the problem(s).
Mathematical Errors: Most (75-84%) of the steps and solutions have no mathematical errors.
Mathematical Terminology and Notation: Correct terminology and notation are used, but it is sometimes not easy to understand what was done.
Strategy/Procedures: Sometimes uses an effective strategy to solve problems, but does not do it consistently.
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