SOLUTION: Find Z when: The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 657 drowning deaths o

Question 240856: Find Z when:
The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 657 drowning deaths of children with 30% of them attributable to beaches.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find Z when:
The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 657 drowning deaths of children with 30% of them attributable to beaches.
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Ho: p = 0.25
H1: p > 0.25
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z(0.30) = (0.30-0.25)/sqrt[0.25*0.75/657] = 2.9597
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Cheers,
Stan H.
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