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OlgaM077 [116]
3 years ago
15

During the 52 week period ranging from 01/01/2002 to 12/30/2002, a bottle manufacturing company tracked the number of cases (of

bottles) it lost in transit on a weekly basis. The average number of cases lost per week was 30.8 with a standard deviation of 2.6. The number of weeks in which it lost more than 36 cases, absent any additional information or assumption, is
Social Studies
1 answer:
nikitadnepr [17]3 years ago
7 0

Answer:

approximately 2 weeks

Explanation:

Assuming normal distribution, we have

mean m = 30.8

standard deviation s = 2.6

The standard random variable is given by Z = (x - 30.8)/2.6

where x denotes the number of cases lost

we are to evaluate probability of losing more than 36 i.e P(x > 36)

This will be P(Z > (36 - 30.8)/2.6) = P(Z > 2)

using the z-score table, we have this probability to be 0.0228

so the number of weeks is given by 52*0.228 = 1.19

which is approximately 2

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