What is the probability that blood clotting time will be less than 7 seconds?
Assume the distribution is normal. Use the area of the normal curve to answer the question. Round to the nearest whole percent.
2006-12-03 10:02:38 · 3 answers · asked by staceylynn1913 2 in Science & Mathematics ➔ Mathematics
1 deviation would contain approximately 66.3% of the area of the curve, 2 deviations is approximtely 83% and 3 deviations is around 97%.
7.35 - .35 = 7
7.35 + .35 = 7.70
So: from 7 to 7.70, ~66% of the curve is in this range and ~34% is outside.
So: with the probility of being less than 7 seconds is:
~34% / 2 (using 1 side of curve not both, outside 1 deviation)
Then: ~17% probility of blood clotting in less than 7 seconds.
2006-12-03 10:16:41 · answer #1 · answered by Dee_Smithers 4 · 0⤊ 1⤋
25% below 7 seconds.
2006-12-03 10:10:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
approximately 13.6% + 2.1% +.1% = ~16%
2006-12-03 10:13:14 · answer #3 · answered by Stu F 2 · 0⤊ 0⤋