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3 years ago

9

Halfway though a bus route, 23 students have been dropped off and 48 students remain on the bus . then write another equation to

determine wether there are 61 or 71 students on the bus at the bus at the beginning of the route

1 answer:

Darina [25.2K]3 years ago

3 0

48 + 23 = 71
The bus started out with 71 students.

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Step-by-step explanation:

19/3=6.3333333333333333333333333

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Customers arrivals at a checkout counter in a department store per hour have a Poisson distribution with parameter λ = 7. Calcul

IgorLugansk [536]

Answer:

(1)14.9% (2) 2.96% (3) 97.04%

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Formula for Poisson distribution: $P(k) = \frac{\lambda^ke^{-k}}{k!}$ where k is a number of guests coming in at a particular hour period.

(1) We can substitute k = 7 and $\lambda = 7$ into the formula:

$P(k=7) = \frac{7^7e^{-7}}{7!}$

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(2)To calculate the probability of maximum 2 customers, we can add up the probability of 0, 1, and 2 customers coming in at a random hours

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$P(k\leq2) = \frac{7^0e^{-7}}{0!} + \frac{7^1e^{-7}}{1!} + \frac{7^2e^{-7}}{2!}$

$P(k \leq 2) = \frac{0.000911882}{1} + \frac{7*0.000911882}{1} + \frac{49*0.000911882}{2}$

$P(k\leq2) = 0.000911882+0.006383174+0.022341108 \approx 0.0296=2.96\%$

(3) The probability of having at least 3 customers arriving at a random hour would be the probability of having more than 2 customers, which is the invert of probability of having no more than 2 customers. Therefore:

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2 years ago

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Hello there, and thank you for posting your question here on brainly.

So, you need to find the ratio of the following to figure out which one is how to find how many yards are in half a mile.

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So you'd divide it by what? 2.

Which is the result? C. 880 yd / 1 mi

Hope this helped!! ☺♥

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Subtract:<br>4 4/9-2 7/9<br>

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