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According to the U.S. Census Bureau, 69% of children under the age of 18 years in the United States lived with two parents in 2009. Suppose that in a recent sample of 1975 children, 1246 were living with two parents.
a. Using the critical value approach and α=0.05, test whether the current percentage of all children under the age of 18 years in the United States who live with two parents is different from 69%.
Round your answer for z to two decimal places.
zobserved=
zcritical left =
zcritical right =
P(Type I error)
c. Calculate the p-value for the test of part a. What is your conclusion if α=0.04?
Round your answer for the p-value to four decimal places.
p-value =
For α=0.04,
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