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2 years ago

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Mary works in a factory that produces 1000 computers each day. When 25 computers were sampled, 7 were found to be defective. Est

imate how many computers produced are defective per day.
A) 300 computers
B) 260 computers
C) 290 computers
D) 280 computers

2 answers:

sergeinik [125]2 years ago

4 0

The answer is D have a good day

harkovskaia [24]2 years ago

3 0

Answer:

the correct is D. 280

Step-by-step explanation:

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Please help me in this question

charle [14.2K]

Number defective=4
number of non-defective=total-defective
=20-4
=16
the questions asked for 1 defective
so we choose only 1 defective from 4 defective items
4C1

and for 1 non-defective
we choose only 1 non-defective from 16 non-defective items
16C1

we choose 2 items from 20 items
so 20C2

answer:
probability= [(4C1) * (16C1)] /(20C2)
=32/95

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A tabletop is in the shape of a trapezoid. The lengths of the trapezoid's parallel sides are 48 inches and 40 inches. The height

goldenfox [79]

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