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3 years ago

The first question please

Mathematics

2 answers:

konstantin123 [22]3 years ago

6 0

It is the first question u are looking for

Ulleksa [173]3 years ago

5 0

Don't understand which is the first

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A local animal rescue organization receives an average of 0.55 rescue calls per hour. Use the Poisson distribution to find the p

andreyandreev [35.5K]

Answer:

B) 0.894

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

A local animal rescue organization receives an average of 0.55 rescue calls per hour.

This means that $\mu = 0.55$

Probability that during a randomly selected hour, the organization will receive fewer than two calls.

$P(X < 2) = P(X = 0) + P(X = 1)$

In which

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-0.55}*(0.55)^{0}}{(0)!} = 0.577$

$P(X = 1) = \frac{e^{-0.55}*(0.55)^{1}}{(1)!} = 0.317$

$P(X < 2) = P(X = 0) + P(X = 1) = 0.577 + 0.317 = 0.894$

5 0

3 years ago

LIVE

Serga [27]

Answer:

15m+80 would be the correct equation

3 0

3 years ago

Read 2 more answers

Christian randomly selects students from his grade to rate a math test as easy, moderate, or difficult. Of the students he surve

IRINA_888 [86]

Answer:

Step-by-step explanation:

Total students he surveyed: 27

Amount that found it something OTHER than easy: 14 (11 moderate + 3 difficult)

This means that $\frac{14}{27}$ found it something other than easy

Multiply that by 162 to find the proportion for the larger population:

162 * (14/27), and we get 84.

4 0

2 years ago

Please answer as fast as you can! Ty for ur time :)

sasho [114]

Answer:

Step-by-step explanation:

555575;[kmjvgy

7 0

3 years ago

Read 2 more answers

The width of a rectangle is 4 less than half the length. If L represents the length, what equation can be use to find the width,

strojnjashka [21]

Answer:

W = 1/2L - 4

Step-by-step explanation:

The width is 4 less than 1/2 of the length.

w = 1/2L - 4

6 0

3 years ago