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 approximate number of bulbs that can be expected to last the specified period of time.More than 400 hours

A. 2207
B. 4195
C. 4219
D. 4207


Answer: D

Mathematics

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A. $18,757 B. $11,411 C. $6412 D. $6,982,668

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The first two terms of a geometric sequence are G0 = 1260 and G1 = 882.Find the common ratio c.

A. 0.70 B. 1.80 C. 1.26 D. 1.70 E. 1.43

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Choose the graph that satisfies the given conditions.Cubic polynomial with two distinct x-intercepts and a positive leading coefficient

A.

B.

C.

D.

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Solve.Dr. Wong can see 9 patients in 2 hours. At this rate, how long would it take her to see 36 patients?

A. 18 hours B. 162 hours C. 7 hours D. 8 hours

Mathematics