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neonofarm [45]
3 years ago
5

The expected number of typographical errors on any page of a certain magazine is 0.2. What is the probability that a certain pag

e you read contains a total of 2 or more typographical errors
Mathematics
1 answer:
zhuklara [117]3 years ago
5 0

Answer:

The probability of 2 or more errors is 0.018.

Step-by-step explanation:

Let <em>X</em> = number of typographical errors on a page of a certain magazine.

The expected number of errors is, <em>λ</em> = 0.2.

The random variable <em>X</em> follows a Poisson distribution with parameter <em>λ</em> = 0.2.

The probability mass function of <em>X </em>is:

P(X=x)=\frac{e^{-0.2}0.2^{x}}{x!};\ x=0,1,2,3...

Compute the probability of 2 or more errors as follows:

P (X ≥ 2) = 1 - P (X < 2)

              = 1 - P (X = 0) - P (X = 1)

=1-\frac{e^{-0.2}0.2^{0}}{0!}-\frac{e^{-0.2}0.2^{1}}{1!}\\=1-0.81873-0.16375\\=0.01752\\\approx0.018

Thus, the probability of 2 or more errors is 0.018.

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malfutka [58]
A= 1/2(bh)

h=4b

50= (1/2)(b*4b)=2b^2

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base = 5 that's your answer

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3 years ago
Xavier has a bag of 20 marbles. 8 are blue, 7 are red, and 5 are green. Xavier pulls out a marble, records what color it is, and
joja [24]

Answer:

0.1

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chance of pulling out a blue marble can be described as 8 equally probable outcomes (blue marbles) out of 20 equally probable outcomes (all marbles).

Similarly, the chance of pulling out a green marble is 5 out of 20.

In total, we have 8*5 (combinations of blue then green) outcomes out of 20*20 (any two marbles):

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10 months ago
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Step-by-step explanation:

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3 years ago
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Liula [17]

Answer:

1) x= 3/2=  1 1/2

2) x=  2/3

Step-by-step explanation:

1)How many times as heavy as  Whiskers is  Piglio?

a) Write a multiplication equation for the question.

2 2/3 kg  * [x]= 4kg

b) Write a division equation for the question.

4/ 2 (2/3) = x

c) Is the answer greater than 1 or less than 1?

Ans) Greater than 1                      

d) Find the answer

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Pigilo is 1 1/2 times as heavy as whiskers

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b) Write a division equation for the question.

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c) Is the answer greater than 1 or less than 1?

Ans) Less than 1                      

d) Find the answer

 8/3/4= x

  8/3 * 1/4= x

   2/3= x

Whiskers is 2/3 times as heavy as Pigilo.

5 0
2 years ago
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Svetradugi [14.3K]

Answer: 7               explanation:574%%82=7  7x82=574

7 0
3 years ago
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