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'
Answer:
The answer is -8.
Step-by-step explanation:
This is because 6 added to -8 results in -2.
So, think of 6 positive things, and 8 negative things.
o o o o o o
p p p p p p p p
The 6 positive things will cancel out 6 of the negative things, leaving behind 2 negative things.
p p
#teamtrees #WAP (Water And Plant)
Answer:
Option 1
Step-by-step explanation:
P(glasses' ^ internet) = 3/20 = 0.15
P(glassses') = 8/20 = 0.40
P(internet) = 7/20 = 0.35
(0.40×0.35) = 0.14
Answer:
E
Step-by-step explanation:
→ Find what numbers he can land
3 , 4 , 5 , 6
→ Count how numbers there are
4
→ Put the number on the appropriate position on the number line
E
