An article in a journal reports that 34% of American fathers take no responsibil

Question

An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 225 fathers from Littleton, yielded 97 who did not help with child care. Find the V-value for a test of the researcher's claim. 030015 0.0529 0.0038 0.0019 Do one of the following, as appropriate: Find the critical z_a/2 value t_a/2 state that neither the normal nor the t distribution applies. 99%; n = 17; sigma is unknown population appears to be normally distributed. t_a/2 = 2.898 t_a/2 = 2.921 z_a/2 = 2.567 z_a/2 = 2.583

Explanation / Answer

15) THE NULL HYPOTHESIS = Ho=p = 0.34

the alternate hypothesis = Ha= p >0.34

as n = 225

we will take it to be normal

alpha = 0.05

p = 97/225 = 0.43

z stat = (0.43-0.34)/sqrt(0.34*0.66/225)

= 2.85

the p value = 0.9978

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