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3 years ago

7

60 61 62 63 64 65 66 67 68 69 70

1 answer:

Svetradugi [14.3K]3 years ago

3 0

Answer:

the mean is 65

Step-by-step explanation:

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PLEASE HELP FOR 13 POINTS AND BRAINLIEST! ;)

inessss [21]

Answer:

No because even though you aren't actually picking the exact people yo do and don't wanna survey but your only surveying those who buy hot lunches when in order to get accurate data, you have to survey everyone who bought hot and cold lunches from the school cafeteria.

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3 years ago

What is the answer to number 11? please explain step by step

Mars2501 [29]

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3 years ago

The arrival of the city busses that trundle down my street is Poisson distributed. According to the published schedule, they arr

joja [24]

Answer:

There is a 3.33% probability that exactly two such busses arrive within 3 minutes of each other.

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 time interval.

What is the probability that exactly two such busses arrive within 3 minutes of each other

The mean is one bus each 10 minutes. So for 3 minutes, the mean is 3/10 = 0.3 buses. So we use $\mu = 0.3$

This probability is P(X = 2).

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

$P(X = 2) = \frac{e^{-0.3}*(0.3)^{2}}{(2)!} = 0.0333$

There is a 3.33% probability that exactly two such busses arrive within 3 minutes of each other.

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2 years ago

Pls somebody help me with this question

Olin [163]

The answer would be B

6 0

3 years ago

This is a required question

ruslelena [56]

The answer is 92 or it can be 1A

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2 years ago