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3 years ago

Pls help me tysm if you can!!

Mathematics

2 answers:

Mice21 [21]3 years ago

8 0

The answer is 0.687.

NeTakaya3 years ago

3 0

<h2><u>Answer is 0.687.</u></h2>

Since you're dividing by 100, simply move the decimal point to the left twice.

68.7 will now become 0.687.

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Answer:

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3 years ago

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Answer:

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Step-by-step explanation:

Given -

7% had exactly three, 11% exactly two, and 21% only one defect in cars.

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P(X=3) = .07 , P(X=2) = .11 , P(X=3) = .21

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$\sigma^{2}$ = variation of E(X) = $\sum (X - \nu) ^{2}P(X)$ = $(3 - 0.64) ^{2}\times0.07 + (2 - 0.64) ^{2}\times0.11 + (1 - 0.64) ^{2}\times0.21 + (0 - 0.64) ^{2}\times0.61$

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standard deviation = $\sqrt{\sigma^{2}}$ = $\sqrt{0.8704^{2}}$ = 0.93(approximately)

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Step-by-step explanation:

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