Question 7

Mathematics

1 answer:

olga2289 [7]3 years ago

8 0

Answer: Graph A

Step-by-step explanation:

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The number of errors in a textbook follow a poisson distribution with a mean of 0.01 errors per page. what is the probability th

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Mean number of errors in each page = 0.01
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It is possible to use the cumulative distribution function (CMF), but the math is a little more complex, involving the gamma-function. Tables and software are available for that purpose.

Thus it is easier to evaluate with a calculator for the individual cases of k=0,1,2 and 3.

The Poisson distribution has a PMF (probability mass function)

$P(k):=\frac{\lambda^ke^{-\lambda}}{k!}$
with λ = 1
=>
$P(0):=\frac{1^0e^{-1}}{0!}=0.3678794$
$P(1):=\frac{1^1e^{-1}}{1!}=0.3678794$
$P(2):=\frac{1^2e^{-1}}{2!}=0.1839397$
$P(3):=\frac{1^3e^{-1}}{3!}=0.0613132$
=>
$P(k$
or
P(k<=3)=0.9810 (to four decimal places)

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The area of a circle is A = pi r^2

A = (3.14) (9)^2
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