1. Professor Jackson is in charge of a program to prepare people for a high scho

Question

1. Professor Jackson is in charge of a program to prepare people for a high school equivalency exam. Records show that 80% of the students need work in math, 70% need work in English, and 55% need work in both areas. Use the appropriate formula to compute the probability that a student selected at random needs math or English. Explain why you used the formula selected. 2. The probability that a college student who has not received a flu shot will get the flu is 0.45. What is the probability that a college student will not get the flu if the student has not had the flu shot?

Explanation / Answer

1. P(math)=0.8

P(english)=0.7

P(math and english)=0.55

P(math or english)=P(math)+P(english)-P(math and english)=0.8+0.7-0.55=0.95

this formula was used because the probablities fall in either math or english and using the venn diagram it is possible to get probability of either of these

2.P(flut)=0.45 thus P(no flu)=1-0.45=0.55

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