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OpenStax, Statistics §8.3 A Population Proportion · Exercise 20 · Statistics · Confidence intervals

A Population Proportion · Exercise 20

The Ice Chalet offers dozens of different beginning ice-skating classes. All of the class names are put into a bucket. The 5 p.m., Monday night, ages 8 to 12, beginning ice-skating class is picked. In that class are 64 girls and 16 boys. Suppose that we are interested in the true proportion of girls, ages 8 to 12, in all beginning ice-skating classes at the Ice Chalet. Assume that the children in the selected class are a random sample of the population.

Calculate the following:
(a) x = _______
(b) n = _______
(c) p′ = _______

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OpenStax, Statistics · §8.3 A Population Proportion · Exercise 20

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