Question 325019
In a recent poll, it was found that 43% of registered U.S. voters would vote for the incumbent president. 
If 100 registered voters were sampled randomly, it was found that 35% would vote of the incumbent. 
Test the claim that the actual proportion is 43%. Let level of significance = 0.01. (Round phat to 2 decimal places.) 


1. 
H0 : p = 0.43 
Ha : p is not 0.43
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2. Level of significance = 1%
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3. Test statistics: z(0.35) = (0.35-0.43)/sqrt(0.43*0.57/100) = -16.16
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4. P-value or critical z0 or t0.
p-value = 2*P(z< -16.16) = zero to 4 decimal places
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5. Rejection Region: z< -2.5758 and z> 2.5758
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6. Decision: Reject Ho.
Test results do not support claim that p = 0.43.
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Cheers,
Stan H. 
7. Interpretation: