2 years ago

Plz help i need it quick!!! simplify

Mathematics

1 answer:

ale4655 [162]2 years ago

3 0

Answer:im not sure sorry

Step-by-step explanation:

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Please help it’s urgent :(

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Answer: the answer is 0.04

Step-by-step explanation:

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A sweater originally costs $36. If the sweater is on sale for $30.24 what is the percent of the discount

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Read 2 more answers

Assume that a policyholder is four times more likely to file exactly two claims as to file exactly three claims. Assume also tha

kykrilka [37]

Answer:

1.3125

Step-by-step explanation:

Given that our random variable $X$ follows a Poisson distribution $P(X=k)=\frac{\lambda^k e^-^p}{k!} \ \ \ \ \ \ \ \ p=\lambda$

Evaluate the formula at $k=2,3:$

$P(X=2)=0.5\lambda^2e^{-\lambda}\\\\P(X=3)=\frac{1}{6}\lambda^2e^{-\lambda}$

#since

$4P(X=2)=P(X=3);\\\\0.5\lambda^2e^{-\lambda}=4\times\frac{1}{6}\lambda^3e^{-\lambda}\\\\0.5\lambda^2=\frac{2}{3}\lambda^3\\\\0.75=\lambda$

The mean and variance of the Poisson distributed random variable is equal to $\lambda$ :

$\mu=\lambda=0.75\\\sigma ^2=\lambda=0.75$

#By property variance:

$\sigma ^2=V(X)=E(X^2)-(E(X))^2=E(X^2)\\\\E(X^2)=\sigma^2+\mu^2=0.75+0.75^2=1.3125$

The expectation is 1.3125

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3 years ago

The price of a sandwich is $2.50 more than the price of a smoothie, which is d dollars. What does the expression d +25 represent

kow [346]

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Principal Zimmer wants to make sure that students have enough time to get across campus between classes. To see how long it take

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Answer:

the answers is step 3

Step-by-step explanation:

i took the test

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