2 years ago

Help....gn l my ljvjgvohUh l

Mathematics

1 answer:

timofeeve [1]2 years ago

4 0

Answer:

y-8

If Tia is 8 years younger than Annette and Annette is y years old, you just take y and subtract 8.

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Last year, a person wrote 126 checks. Let the random variable x represent the number of checks he wrote in one day, and assume

Arisa [49]

Answer: The mean number of checks written per day $=0.3452$

Standard deviation $=0.5875$

Variance $=0.3452$

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Given : The total number of checks wrote by person in a year = 126

Assume that the year is not a leap year.

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Let the random variable x represent the number of checks he wrote in one day.

Then , the mean number of checks wrote by person each days id=s given by :-

$\lambda=\dfrac{126}{365}\approx0.3452$

Since , the distribution is Poisson distribution , then the variance must equal to the mean value i.e. $\sigma^2=\lambda=0.3452$

Standard deviation : $\sigma=\sqrt{0.3452}=0.5875372328\approx0.5875$

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