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Len [333]
3 years ago
12

Identify which statement about the mean of a discrete random variable is not true or state that they are all true.Choose the cor

rect answer below.A.The mean can be interpreted as the average outcome if the experiment is repeated many times.B.The mean must be a possible value of the random variable.C.The mean can be found using the formula Summation from nothing to nothing x times Upper P (x ).D.All of these statements are true.
Mathematics
1 answer:
pashok25 [27]3 years ago
4 0

Answer:

A, C are true .  B is not true.

Step-by-step explanation:

Mean of a discrete random variable can be interpreted as the average outcome if the experiment is repeated many times. Expected value or average of the distribution is analogous to mean of the distribution.

The mean can be found using summation from nothing to nothing x times Upper P (x) , i.e ∑x•P(x).

Example : If two outcomes 100 & 50 occur with probabilities 0.5 each. Expected value (Average) (Mean) : ∑x•P(x) = (0.5)(100) + (0.5)(50) = 50 + 25 = 75

The mean may not be a possible value of the random variable.

Example : Mean of possible no.s on a die = ( 1 + 2 + 3 + 4 + 5 + 6 ) / 6 = 21/6 = 3.5, which is not a possible value of the random variable 'no. on a die'

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Need help number the answers bye order plz
iragen [17]
OK so here it goes:
1a. 10³
1b. 10²
1c. 10(tiny 6)
1d. 10³
1e. 10(tiny6)
1f. 10(tiny 5)

2a. 400
2b. 640,000
2c. 5,400
2d. 5,301,000
2e. is it multipcation or addition
2f. 607,200
2g. 0.948
2h. 0.0094

3a) 0.02, 0.2, 2, 20, 200, 2000
3b) 3,400,000 ; 34,000; 340, 3.4, 0.034
3c) 85,700; 8,570; 857, 85.7, 8.57, 0.857
3d) 444, 4440, 44,400; 440,000; 4,400,000; 44,000,000
3e) 0.95, 9.5, 950, 95,000; 950,000; 9,500,000

Hope this helps.
6 0
3 years ago
8 + 3 + 2a = -1 + 3a + 4
otez555 [7]

Answer:

a = 8

Step-by-step explanation:

8 + 3 + 1 - 4 = 3a - 2a

8 = a

a = 8

I hope this helps a little bit.

3 0
2 years ago
Read 2 more answers
6. Dawn lingua bought three yards of cloth to make some curtains. The cloth was on sale for $2.25 per yard. How much did dawn pa
jekas [21]

7.25 u need to add 2.25+5=7.25

8 0
3 years ago
Triangle JKL was dilated with the origin as the center of dilation to create triangle ′′′.J′K′L′. The triangle was dilated using
zmey [24]

Answer:

KL = 5.25

LJ = 6

Step-by-step explanation:

i don’t know the first one

7 0
3 years ago
Evaluate. 1. for x=-3 and y=2
Sveta_85 [38]
<h3>Given:</h3>

X = - 3

Y = 2

2^ x^ y^

=2^ (-3)^ (2)^

= (-6)^(2)

<h3>= -12</h3>
3 0
2 years ago
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