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strojnjashka [21]
3 years ago
10

Which table shows a proportional relationship between x and y? (a)x y 1 5 2 6 3 7 (b)x y 2 3 4 6 6 9 (c) x y 4 16 8 64 12 144 (d

)x y 1 3 2 9 3 27
Mathematics
1 answer:
JulijaS [17]3 years ago
7 0
A) 0 , 4
B) 0 , 0
C) 0 , 0
D) 0 , 1

Are you kidding
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Step-by-step explanation:

Use the slope formula

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(1-10)/(9-7)

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What’s the correct answer for this question?
mars1129 [50]

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7 0
3 years ago
a statistics professor finds that when he schedules an office hour at the 10:30a, time slot, an average of three students arrive
Veseljchak [2.6K]

Answer:

The probability that in a randomly selected office hour in the 10:30 am time slot exactly two students will arrive is 0.2241.

Step-by-step explanation:

Let <em>X</em> = number of students arriving at the 10:30 AM time slot.

The average number of students arriving at the 10:30 AM time slot is, <em>λ</em> = 3.

A random variable representing the occurrence of events in a fixed interval of time is known as Poisson random variables. For example, the number of customers visiting the bank in an hour or the number of typographical error is a book every 10 pages.

The random variable <em>X</em> is also a Poisson random variable because it represents the fixed number of students arriving at the 10:30 AM time slot.

The random variable <em>X</em> follows a Poisson distribution with parameter <em>λ</em> = 3.

The probability mass function of <em>X</em> is given by:

P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!};\ x=0,1,2,3...,\ \lambda>0

Compute the probability of <em>X</em> = 2 as follows:

P(X=2)=\frac{e^{-3}3^{2}}{2!}=\frac{0.0498\times 9}{2}=0.2241

Thus, the probability that in a randomly selected office hour in the 10:30 am time slot exactly two students will arrive is 0.2241.

6 0
3 years ago
Read 2 more answers
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