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11111nata11111 [884]
3 years ago
6

Which table represents the statement “Di runs at a rate of 4 meters per second”?

Mathematics
2 answers:
Soloha48 [4]3 years ago
7 0
I would go with C. like the other person
irinina [24]3 years ago
6 0

Answer:

c

i am doing on edg

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businessText message users receive or send an average of 62.7 text messages per day. How many text messages does a text message
KiRa [710]

Answer:

(a) The probability that a text message user receives or sends three messages per hour is 0.2180.

(b) The probability that a text message user receives or sends more than three messages per hour is 0.2667.

Step-by-step explanation:

Let <em>X</em> = number of text messages receive or send in an hour.

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

It is provided that users receive or send 62.7 text messages in 24 hours.

Then the average number of text messages received or sent in an hour is: \lambda=\frac{62.7}{24}= 2.6125.

The probability of a random variable can be computed using the formula:

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

(a)

Compute the probability that a text message user receives or sends three messages per hour as follows:

P(X=3)=\frac{e^{-2.6125}(2.6125)^{3}}{3!} =0.21798\approx0.2180

Thus, the probability that a text message user receives or sends three messages per hour is 0.2180.

(b)

Compute the probability that a text message user receives or sends more than three messages per hour as follows:

P (X > 3) = 1 - P (X ≤ 3)

              = 1 - P (X = 0) - P (X = 1) - P (X = 2) - P (X = 3)

             =1-\frac{e^{-2.6125}(2.6125)^{0}}{0!}-\frac{e^{-2.6125}(2.6125)^{1}}{1!}-\frac{e^{-2.6125}(2.6125)^{2}}{2!}-\frac{e^{-2.6125}(2.6125)^{3}}{3!}\\=1-0.0734-0.1916-0.2503-0.2180\\=0.2667

Thus, the probability that a text message user receives or sends more than three messages per hour is 0.2667.

6 0
3 years ago
A bag contains 3 red marbles, 2 blue marbles, and 5 green marbles. What is the probability of selecting a red marble, replacing
RUDIKE [14]

Answer:

3/20

Step-by-step explanation:

The total number of marbles is

3 red marbles+ 2 blue marbles+ 5 green marbles = 10 marbles

P(1st marble is red) = red marbles/total

                                =3/10

We replace the marble so there are still 10 marbles in the bag

P(2nd marble is green) = green marbles/total

                                =5/10 = 1/2

P(1st red, 2nd green) = P(1st marble is red) * P(2nd marble is green)

                                   =3/10 *1/2

                                    =3/20

8 0
3 years ago
Marina simplified the expression 4x + 5(–4x – b) – (x – 2) to be –17x – 8.
Simora [160]
The answer you are looking for is 2!!
4 0
3 years ago
Read 2 more answers
Add 6370 square to 6370 square
Phantasy [73]
I’m not sure if this is what you meant

7 0
2 years ago
Which statements are true? Check all that apply.
babunello [35]

Answer:

The population density for Montana can be found using the ratio 1,005,141:145,552. ; and The state with the smallest population density is Montana.

Step-by-step explanation:

Population density is found by dividing the population by the area of the state.

For Florida, this is 19317568/53927 = 358.22.

For Hawaii, this is 1392313/6423 = 216.77.

For Montana, this is 1005141/145552 = 6.91.

For Oregon, this is 3899353/95997 = 40.62.

The first statement told us the correct manner to find the population density  for Montana, so it is correct.

The second statement had the method backward for Oregon, so it is not correct.

The third statement is that the population density for Hawaii is larger than the one for Florida; this is not true, as Hawaii's is 216.77 and Florida's is 358.22.

The fourth statement is that the state with the smallest population density is Oregon; this is not true, since Montana's is 6.91 and Oregon's is 40.62.  Montana's is the smallest, so the last statement is true.

7 0
3 years ago
Read 2 more answers
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