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evablogger [386]
3 years ago
7

Assume the Poisson distribution applies. Use the given mean to find the indicated probability.

Mathematics
1 answer:
algol133 years ago
4 0
For given Poisson distribution, <span>μ=8.

</span>P(k)=μ^k*e^(-<span>μ)/k!
so
P(4)=8^4*e^(-8)/4!=0.05725 approx.

</span>
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Countering a cost $9.40 per sales tax. After sales tax, it cost $9.87. What is the sales tax rate?
Nady [450]
STEP 1:
find the sales tax (decimal form)

x= sales tax

Cost + (Cost * Sales Tax)= Total
plug in known numbers

$9.40 + ($9.40 * x)= $9.87

9.40 + 9.40x= 9.87
subtract 9.40 from both sides

9.40x= 0.47
divide both sides by 9.40

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STEP 2:
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= 0.05 * 100
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Hope this helps! :)
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Step-by-step explanation:

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