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erma4kov [3.2K]
2 years ago
7

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

at there are 3 or less errors in 100 pages? round your answer to four decimal places (e.g. 98.7654).
Mathematics
1 answer:
neonofarm [45]2 years ago
3 0
Mean number of errors in each page = 0.01
Mean number of errors in 100 pages = 0.01*100=1

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 value of a certain rare stamp is 160% of its value three years ago if the stamp is worth $220 then what is it’s worth today
xz_007 [3.2K]

Answer:

572$

Step-by-step explanation:

100% of 220 is 220 so add them together. Then find 60 % of 220. To find 10% of a number move the decimal to the left one time. Which is 22. After that, multiply 22 by 6 because it's 60%. then ad 220+220+132=572.

6 0
3 years ago
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A regular hexagon has sides of 2 feet. What is the area of the hexagon?
il63 [147K]

Trigonometry would help with this question.

The area of a regular hexagon is ((3√3)s^2)/2 where s is the side.

Plugging in 2 gives us 6√3 or 10.39 feet.

5 0
3 years ago
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Find the surface are of the cylinder in terms of pi
Andrej [43]
Hello!

To find the surface area of a cylinder you use the equation

SA = 2 \pi rh + 2 \pi  r^{2}

SA is surface area
r is radius
h is height

PUt in the values you know

SA = 2 \pi (7)(18) + 2 \pi  * 7^{2}

Square the number

SA = 2 \pi (7)(18) + 2 \pi * 49

Multiply 7 and 18

SA = 2 \pi * 126 + 2 \pi  * 49

Multiply 126 by 2

SA = 252 \pi  + 2 \pi  * 49

Multiply the 49 by 2

SA = 252 \pi  + 98 \pi

Add

SA = 350 \pi

The answer is A)350 \pi cm^{2}

Hope this helps!
7 0
2 years ago
For f(x) = 0.01(2)^x, find the average rate of change from x = 3 to x = 8.
asambeis [7]
8 - 3 = 5
D.5

to find the average you need to multiply depending on the sittuation
5 0
2 years ago
Hurry please...
Eva8 [605]

Answer:

initial value=2

rate of change=1

Step-by-step explanation:

rate of change=(3-2)/(1-0)=1

7 0
3 years ago
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