The duration of routine operations at chicago general hospital has approximately a normal distribution with an average of 130 mi

Question

2 years ago

15

nutes and a standard deviation of 12 minutes. what proportion of operations last at least 120 minutes

1 answer:

vredina [299] · Answer 1 · 2022-10-12T14:52:10+03:00

5 0

Answer:

79.77%

Step-by-step explanation:

P(X≥120) = normalcdf(120,1e99,130,12) = 0.7976716754 ≈ 0.7977 = 79.77%

Therefore, about 79.77% of operations last at least 120 minutes