3 years ago

HELP FAST PLEASE

Mathematics

1 answer:

Tresset [83]3 years ago

5 0

The answer is A because 48.2 +39.4.6 is 87.6

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Answer:

The correct answer is "0.0000039110".

Step-by-step explanation:

The given values are:

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$\mu = 40n$

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then,

The required probability will be:

= $P(Y_{20}>1000)$

= $P(\frac{Y_{20}-\mu}{\sigma} >\frac{1000-40\times 20}{\sqrt{100\times 20} } )$

= $P(Z>\frac{1000-800}{44.7214} )$

= $P(Z>\frac{200}{44.7214} )$

= $P(Z>4.47)$

By using the table, we get

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Step-by-step explanation:

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