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Vanyuwa [196]
3 years ago
13

Consider the probability that no fewer than 74 out of 112 houses will lose power once a year. Assume the probability that a give

n house will lose power once a year is 97%. Specify whether the normal curve can be used as an approximation to the binomial probability by verifying the necessary conditions.
Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
5 0

Answer: the normal curve can be used as an  approximation to the binomial probability considering the following condition: when the sample is large, in this case n=112

Step-by-step explanation:

for a binomial experiment to be approximated to normal distribution, the following conditions must be present:

i.  sample size must be large, in this case sample size is 112

ii.  the mean must be equal to np,where n is sample size and p is probability  of success

iii.  the standard deviation must be equal to npq,where q is the probability of failure

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