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icang [17]
3 years ago
11

Determine whether the random variable X has a binomial distribution. If it does, state the number of trials n. If it does not, e

xplain why not. Twelve students are randomly chosen from an English class of 150 students. Let X be the average number of classes that the students are taking.
Mathematics
1 answer:
natita [175]3 years ago
3 0

Answer:

X does not have a binomial distribution

Step-by-step explanation:

Since we do not know the probability of success in each trial and we therefore don't know if it is same or not. We can hereby conclude that X does not have a binomial distribution

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a spherical ball with a volume of 7776pi cm cubed is packaged in a box that is in the shape of a cube. the edge length of the bo
Elenna [48]

Answer:

that is the solution to the question

3 0
3 years ago
Which is the graph of y = cos(x) + 3? On a coordinate plane, a cosine curve has a maximum of 3 and a minimum of negative 3. On a
Andrei [34K]

Answer: none of them is right, did you meant maximum 4 and minimum 2?

Step-by-step explanation: cos x gets values between 1 and -1.

If you add 3 you get values between 4 and 2.

8 0
3 years ago
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What is the equation if – 4y = 8x + 16 is solved for y<br> help assignment is due in 20 min
Marysya12 [62]

Answer:

Slope=4.000/2.000=2.000

Step-by-step explanation:

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1 year ago
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On April 1, Preston McCord deposited $1,400 in a savings account that pays annual interest of 3.2%
lesya692 [45]

Answer:

After 6 months, the interest generated by the investment would be $21.10.

Step-by-step explanation:

To determine the interest that Preston McCord could earn by investing $ 1,400 in an account that pays 3.2% annual interest compounded monthly, leaving said money invested for a period of 6 months, it is necessary to perform the following calculation:

X = 1,400 x (1 + 0.032 / 6) ^ 0.5x6

X = 1,421.10

1421.10 - 1400 = 21.10

Thus, after 6 months, the interest generated by the account will be $ 21.10.

4 0
3 years ago
A pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. The height, h, of th
Gennadij [26K]
<h2>Explanation:</h2>

In this problem we have a pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. So the height, h, of the pumpkin at time t seconds after the launch can be modeled by the equation:

h(t) = -16t^2 + 84t + 20

So this is the equation of a parabola. The maximum of this parabola occurs at its vertex. So let's find this vertex:

\text{The x-value of the vertex is}: \\ \\ t=-\frac{b}{2a} \\ \\ \\ Where: \\ \\ a=-16 \\ \\ b=84 \\ \\ c=20 \\ \\ \\ t=-\frac{84}{2(-16)} \\ \\ t=-\frac{84}{-32} \\ \\ t=\frac{21}{8}=2.625 \\ \\ h(2.625)=-16(2.625)^2+84(2.625)+20 \\ \\ h(2.625)=-110.25+220.5+20 \\ \\ h(2.625)=130.25m

Finally, the maximum occurs at time 2.625 seconds when the height is 130.25m

8 0
3 years ago
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