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Natasha2012 [34]
3 years ago
11

Minxia counted 40 green cars and 20 silver cars inn the parking lot if the number of green cars stays the same how many more sil

ver cars would need to be added so the ratio of green cars to silver cars is 1 to 3
Mathematics
1 answer:
asambeis [7]3 years ago
3 0
100 cars. 1:3 = 40: x.   x=120   120-20=100 Hope this helps :)
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The required probability is 0.55404.

Step-by-step explanation:

Consider the provided information.

The number of typographical errors on a page of the first booklet is a Poisson random variable with mean 0.2. The number of typographical errors on a page of second booklet is a Poisson random variable with mean 0.3.

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According to Poisson distribution: {\displaystyle P(k{\text{ events in interval}})={\frac {\lambda ^{k}e^{-\lambda }}{k!}}}

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The probability of more than 2 typographical errors in the two booklets in total is:

P(k > 2)= 1 - {P(k = 0) + P(k = 1) + P(k = 2)}

Substitute the respective values in the above formula.

P(k > 2)= 1 - ({\frac {2.9 ^{0}e^{-2.9}}{0!}} + \frac {2.9 ^{1}e^{-2.9}}{1!}} + \frac {2.9 ^{2}e^{-2.9}}{2!}})

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P(k > 2)=0.55404

Hence, the required probability is 0.55404.

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