Can someone show me how they got the answer B?
Homework Answers
µx = 3.74
Sample data
| Sample | X-bar |
| mA | 3.585 |
| mE | 3.590 |
| mI | 3.720 |
| mR | 3.735 |
| AE | 3.655 |
| AI | 3.785 |
| AR | 3.800 |
| EI | 3.790 |
| ER | 3.805 |
| IR | 3.935 |
P(µ - 0.1 < X-bar < µ+0.1) = P(3.74-0.1 < X-bar < 3.74+0.1)
=P(3.64 < X-bar < 3.84)
=just count the numbers between 3.64 and 3.84 from the above sample. It would be 7, so 7 out of 10 (7/10) = 0.7
0.7 is 70%
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