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3 years ago

What is the probability of 3c5

Mathematics

1 answer:

frosja888 [35]3 years ago

3 0

Answer:

Step-by-step explanation:

The question is wrong it should be 5C3

5C3=5!/((5-3)!•3!)=5!/(2!•3!)

=(5•4•3•2•1)/(2•1•3•2•1)

=10

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What is the leading coefficient of 8 -5x+x^3-2x^4

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Answer:

-2

Step-by-step explanation:

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Write the polynomial from highest power of x to lowest power of x

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3 years ago

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3 years ago

Cars arrive at the Wendy's drive-through at a rate of 1 car every 5 minutes between the hours of 11:00 PM and 1:00 AM. on Saturd

mestny [16]

Answer:

1) $P(X = 8) = 0.1033$

$P(X = 9) = 0.0688$

2) Expected number of 200 restaurants in which exactly 8 customers use the drive-through: 20.66

Expected number of 200 restaurants in which exactly 9 customers use the drive-through: 13.76

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.

Question 1. Use the Poisson distribution to calculate the probability that exactly 8 cars will use the drive-through between 12:00 midnight and 12:30 AM on a Saturday night at Wendy's. Do the same for exactly 9 cars.

Cars arrive at the Wendy's drive-through at a rate of 1 car every 5 minutes between the hours of 11:00 PM and 1:00 AM. on Saturday nights. This means that during 30 minutes, 6 cars expected to arrive. So $\mu = 6$ .