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The circumference of a circle can be found using the

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1 answer:

Ivahew [28]2 years ago

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Answer - to solve for the equivalent equation of r you would need to use the formula r=c/pi2.

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a ) P(x> 65) = 0.4641

b) P(x< 60) =0.6915

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Step-by-step explanation:

Given data:

$\mu = 64.2$

$\sigma = 8.44$

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a) $P(x> 65) = P(z> \frac{65 - 64.2}{8.44})$

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b) $P(x< 60) = P(z< \frac{60 - 64.2}{8.44})$

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c) P(65 < x <80)

$= P(x$

$= P(z< \frac{80 - 64.2}{8.44}) - P(z< \frac{65 - 64.2}{8.44})$

$= P(z < 1.87) - P(z < 0.09)$

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