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vitfil [10]
3 years ago
8

The number of typing errors made by a typist has a Poisson distribution with an average of five errors per page. If more than fi

ve errors appear on a given page, the typist must retype the whole page. What is the probability that a randomly selected page does not need to be retyped
Mathematics
1 answer:
xeze [42]3 years ago
4 0

Answer:

0.61596

Step-by-step explanation:

Given that:

λ = 5 (5 errors per page)

Poisson distribution formula :

P(x = x) = (λ^x * e^-λ) / x!

Probability that page does not need to be retyped means that error on page is less than or equal to 5

P(x ≤ 5) = p(x = 5) + p(x = 4) +... + p(x = 0)

The individual probabilities can be obtained using the formula above or the use of a calculator

P(x ≤ 5) = 0.17547 + 0.17547 + 0.14037 + 0.08422 + 0.03369 + 0.00674

P(x ≤ 5) = 0.61596

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3 years ago
Read 2 more answers
Marta and Kim are sisters. Five years ago Kim's age was twice as great as martas age. If Marta is no m years old, what expressio
Hitman42 [59]

Answer:

y = 2m-5

Kim's age now is y = 2m-5

Step-by-step explanation:

Let m represent martas age now and y represent Kim's age now

Given;

Five years ago Kim's age was twice as great as martas age.

(y-5) = 2(m-5)

Solving for y;

y-5 = 2m-10

y = 2m-10+5

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Kim's age now is y = 2m-5

5 0
3 years ago
Can someone solve 2x-3y=9 and give me the slope and y intercept SHOW WORK please
Dominik [7]

Answer:

The slope is 2/3 and the y-intercept is -3

Step-by-step explanation:

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Hope this helped I am not good at explaining but I did this unit like two months ago.

4 0
3 years ago
If a side of the field is 9/10 mile and 1/2 mile what is the length of the field
Katyanochek1 [597]

Answer:

<em>The field is 1 and 4/10 mile long.</em>

Step-by-step explanation:

If I understand the question:

(1/2) + (9/10) =

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(14/10) is 1 and 4/10

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2 years ago
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