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The relative frequency distribution of the number of phobias reported by a hypothetical sample of 500 college students is given as follows. 0-2 0.51 3-5

The relative frequency distribution of the number of phobias reported by a hypothetical sample of 500 college students is given as follows.

0-2 0.51 3-5 0.28 6-8 0.12 9-11 0.06 12-14 0.03

(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?

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