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Probability that a bulb of the brand

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Reference no: EM13848560

Suppose a brand of light bulbs is normally distributed, with a mean life of 1800 hr and a standard deviation of 150 hr.

Areas Under the Standard Normal Curve

z

A

Z

A

1.00

.3413

1.50

.4332

1.10

.3643

1.60

.4452

1.20

.3849

1.70

.4554

1.30

.4032

1.80

.4641

1.40

.4192

1.90

.4713

Find the probability that a bulb of the brand lasts between 1515 hr and 2010 hr.

Reference no: EM13848560

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