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Virty [35]
3 years ago
12

Consider the probability that fewer than 11 out of 149 houses will lose power once a year. Assume the probability that a given h

ouse will lose power once a year is 11%.
Approximate the probability using the normal distribution. Round your answer to four decimal places.
Mathematics
1 answer:
bogdanovich [222]3 years ago
3 0

Answer:

.0615

Step-by-step explanation:

p=.11

n=149

np=16.39 (which is the mean)

x<11 so 10.5...-999

σ= \sqrt{16.39(1-.11)} =3.81930622

normalcdf(-999,10.5,16.39,3.81930622)

= .0615167786

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