Since the beginning of the year 1982 people have come into blood bank to donate blood and 340 were found to ha

Question

Since the beginning of the year 1982 people have come into blood bank to donate blood and 340 were found to have high blood pressure estimate the probabilities of the next person who comes in to give blood will have high blood pressure

GPT-5 mini · Answer

Interpret the sample proportion as the estimate.  
Point estimate: p̂ = 340 / 1982 ≈ 0.1716 (≈ 17.16%).

Approximate 95% confidence interval (normal approximation):
SE = sqrt[p̂(1−p̂)/n] ≈ sqrt(0.1716·0.8284 / 1982) ≈ 0.00847  
95% CI: p̂ ± 1.96·SE ≈ 0.1716 ± 0.0166 → (0.1550, 0.1882)

So the best estimate that the next donor has high blood pressure is about 0.1716 (17.2%), with a 95% CI ≈ 15.5% to 18.8%, assuming donors are independent and the rate is stable over time.

Since the beginning of the year 1982 people have come into blood bank to donate blood and 340 were found to have high blood pressure estimate the probabilities of the next person who comes in to give blood will have high blood pressure

All Answers 1

Submit Your Answer