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Refer to Example 3 3 From the histogram of the marks

Refer to Example 3.3. From the histogram of the marks, estimate the following probabilities.

a. P(55 < X < 80)

b. P(X > 65)

c. P(X < 85)

d. P(75 < X < 85)

a. P(55 < X < 80)

b. P(X > 65)

c. P(X < 85)

d. P(75 < X < 85)

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