**Question: ****In a month long study of a daily dose of an experimental anxiety drug, some of the 250 ****subjects experienced headaches. Using the following computer results from the study, find the probability of randomly selecting a study subject that had experienced**

X |
0.00 |
1.00 |
2.00 |
3.00 |
4.00 |
5.00 |
6.00 |

P(X) |
0.3341 |
0.4019 |
0.2014 |
0.0538 |
0.0081 |
0.0006 |
0.0000 |

**X = number of headaches**

**a. ****At least five headaches.**

**b. ****At most two headaches.**

**c. ****More than one headache.**

**d. ****At least one headache.**