Mathematics, 30.04.2021 19:40 jess7kids
A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the percentage of bulbs that can be expected to last the period of time.
Between 290 hours and 500 hours
Select one:
a. 58.26%
b. 48.2%
c. 58.22%
d. 48.26%
Answers: 3
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