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rewona [7]
3 years ago
15

A continuous random variable may assume

Mathematics
1 answer:
Eddi Din [679]3 years ago
5 0

Your answer is going to be A.


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The ages of members of an online gaming group are normally distributed with a mean of 23 years and a standard deviation of 4 yea
Lelechka [254]
To get the number of members between 15 years and 30 years we proceed as follows:
z=(x-μ)/σ
where:
mean,μ=23
standard deviation, σ=4 years
thus
P(15<x<31)
when x=15
P(x<15)
z=(15-23)/4
z=-2
thus
P(x<15)=P(z<-2)=0.0228

when x=31
z=(31-23)/4
z=2
thus
P(x<31)=P(z<2)=0.9772
Hence:
P(15<x<31)=0.9544
hence the number of members between that age was:
0.9544×300
=286.32 people
~285 People
Answer: 285 people

5 0
4 years ago
Can somone help me with this please
yaroslaw [1]

Answer:

undefined

0

Step-by-step explanation:

We can use the slope formula

m = (y2-y1)/(x2-x1)

m = (-7 -5)/(-6 - -6)

   = (-7-5)/(-6+6)

   -12 /0

undefined

m = (y2-y1)/(x2-x1)

m = (-3 - -3)/(7 - -8)

    = (-3+3)/(7+8)

    = 0/15

   = 0

8 0
3 years ago
Read 2 more answers
Write (and graph) the equation of the line with a slope of ¼ that goes through the point (1, 3).
lara [203]
Y-3=1/4(X-1)
Y-3=1/4X-1/4
Y=1/4X+11/4
3 0
3 years ago
Question 5^ Need help ... ASAP ... your help is really appreciated ...
goblinko [34]

Answer:

See below

Step-by-step explanation:

I think we had a question similar to this before. Again, let's figure out the vertical and horizontal distances figured out. The distance from C at x=8 to D at x=-5 is 13 units while the distance from C at y=-2 to D at y=9 is 11 units. (8+5=13 and 2+9=11, even though some numbers are negative, we're looking at their value in those calculations)

Next, we have to divide each distance by 4 so we can apply it to the ratio. 13/4=\frac{13}{4} and 11/4=\frac{11}{4}. Next, we need to read the question carefully. It's asking us to place the point in the ratio <em>3</em> to <em>1</em> from <em>C</em> to <em>D</em>. The point has to be closer to endpoint D because of this. Let's take each of our fractions, multiply them by 3, then add them towards the direction of endpoint D to get our answer (sorry if that sounds confusing):

\frac{13}{4}*3 = \frac{39}{4}\\ 8-\frac{39}{4} =  \frac{-7}{4}\\\frac{11}{4}*3 = \frac{33}{4}  \\-2+\frac{33}{4} = \frac{25}{4}

Therefore, our point that partitions CD into a 3:1 ratio is (\frac{-7}{4}, \frac{25}{4}).

I'm not sure if there was more to #5 judging by how part B was cut off. From what I can understand of part B, however, I believe that Beatriz started from endpoint D and moved towards C, the wrong direction. She found the coordinates for a 1:3 ratio point.

Also, for #6, since a square is a 2-dimensional object, the answer needs to be written showing that. The answer for #6 is 9 units^2.

7 0
3 years ago
vTriangles 1 and 2 are similar. What ratio relates a side length of triangle 1 to the corresponding side length of triangle 2? F
valkas [14]

Answer:

a

Step-by-step explanation:

3 0
3 years ago
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