3) In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension (high blood pressure). a) obtain a point estimate for the proportion of adult males...

I just need subpart (d) please

Extracted text: 3) In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension (high blood pressure). a) obtain a point estimate for the proportion of adult males 20 to 34 years of age who have hypertension. Construct a 95% confidence interval for the proportion of adult males 20 to 34 years of age who have hypertension. Interpret the confidence interval. 58 - 0.086 678 0.086(1-0.086) 1.96 x - 0.021 678 0.086-0.021=0.065 0.086+0.021=0.30 Adults males between 20-34 who have hypertension is between 0.065 and 0.30 b) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to be within 3 percentage points with 95% confidence if you use the point estimate obtained in part a? 1.96²×0.086(1–0.086) - 334 0.032 c) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to be within 3 percentage points with 95% confidence if you don't have a prior estimate? 1.96?x0.25 z 1068 0.032 d) Is it possible that the true proportion of adult males 20 to 34 years of age who have hypertension is actually 12%? Is it likely? Explain.