Mathematics, 13.07.2020 21:01 KittyLoverCat

The relative frequency distribution of the number of phobias reported by a hypothetical sample of 500 college students is given as follows. 0–2 0.48
3–5 0.26
6–8 0.12
9–11 0.09
12–14 0.05

Required:
a. What is the probability that a college student expresses fewer than three phobias?
b. What is the probability that a college student expresses more than eight phobias?
c. What is the probability that a college student has between 3 and 11 phobias?

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