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 2025 children, 1233 were living with two parents.

a. Using the critical value approach and

=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 =

Enter your answer; z_observed

zcritical left =

Enter your answer; z_critical left

zcritical right =

Enter your answer; z_critical right

We

Choose your answer; We

reject fail to reject the null hypothesis.

We conclude that the current percentage of all children under the age of 18 years in the United States who live with two parents is

Choose your answer; We conclude that the current percentage of all children under the age of 18 years in the United States who live with two parents is

not different from different from 69%.