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Distribution of the number of phobias

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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 0.47

3-5 0.27

6-8 0.14

9-11 0.07

12-14 0.05

(a) What is the probability that a college student expresses fewer than three phobias?

(b) What is the probability that a college student has between 3 and 11 phobias?

Reference no: EM132171726

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