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Over [174]
4 years ago
5

A factory makes car batteries. The probability that a battery is defective is 1/11. If 500 batteries are tested, about how many

are expected to be defective?
Mathematics
1 answer:
valentinak56 [21]4 years ago
3 0

Answer:

45.45 batteries

Step-by-step explanation:

The probability of any random battery being defective is 1 in 11, the number of expected defects in a population of 500 batteries is given by:

E= \frac{1}{11}*500\\E=45.45\ batteries

45.45 batteries are expected to be defective.

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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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Solve the system of equations.<br> 3x + y = 3 <br> x + y = 2
qwelly [4]
When solving system equations, we can use substitution method or elimination. Today I'm using substitution method.

First name the 2 equations.
3x + y = 3 (1)
x + y = 2 (2)

Now pick one equation and express one algebra in forms of the other.
From (2),
x = 2 - y (3)

Now substitute (3) into (1),
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x = 2 - 1.5
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5 0
3 years ago
Which excel cell entry will calculate the square root of 165? =sqrt[165] sqrt(165) sqr(165) =sqrt(165)?
svetoff [14.1K]
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4 0
4 years ago
Which number is a factor of 22 but not multiple of 2 ?
Masja [62]

Answer:

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Step-by-step explanation:

..............

6 0
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If anyone could help me answer please do!
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