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It is generally believed that nearsightedness affects about 12% of children. A school district gives ...

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It is generally believed that nearsightedness affects about 12% of children. A school district gives ...

It is generally believed that nearsightedness affects about 12% of children. A school district gives vision tests to 133 incoming kindergarten children.

a. Describe the sampling distribution model for the sample proportion by naming the model and telling its mean and standard deviation. Justify your answer.
b. Sketch and clearly label the model.
c. What is the probability that in this group over 15% of the children will be found to be nearsighted?

Textbook

Stats: Modeling the World

Edition: 4^th

Authors: Bock, Velleman, De Veaux

Read 160 times

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