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6. 1 points P A PODStats 11.00 A report sumanes a survey of people in two independent random samples. One same consisted of y
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Answer #1

b)

For Young adult:

n1 = 800, p̂1 = 0.37

For parents:

n2 = 300, p̂2 = 0.27

α = 0.05

Null and Alternative hypothesis:

Ho : p1 = p2

H1 : p1 > p2

Test statistic:

z = (p̂1 - p̂2)/√ [(p̂1*(1-p̂1)/n1)+(p̂2*(1-p̂2)/n2) ]

= (0.37 - 0.27)/√[(0.37*0.63/800) + (0.27*0.73/300)] = 3.25

p-value = 1- NORM.S.DIST(3.2472, 1) = 0.0006

p-value < α, Reject the null hypothesis.

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