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Kryger [21]
3 years ago
14

7 in 4 in 12 in 3 in: 9 in

Mathematics
1 answer:
jarptica [38.1K]3 years ago
5 0

Answer:

thanks for the points here u go to

Step-by-step explanation:

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Let the random variable X be equally likely to assume any of the values 1/14, 1/7, or 3/14. Determine the mean and variance of X
Dimas [21]

Answer:

1/7 ;

0.0034

Step-by-step explanation:

Given that:

X = 1/14, 1/7, 3/14

n = number of observations = 3

Since, probability of X is equally likely ;

P(X) = Σp(x) = 1 ; p(x) = 1/n = 1/3

The mean, m ;

Σx*p(x) = (1/3 * 1/14) + (1/3 * 1/7) + (1/3 * 3/14)

= 1/42 + 1/21 + 3/42

= (1 + 2 + 3) / 42

= 6 / 42

= 1/7

The variance :

Σx²*p(x) - m²

((1/3) * (1/14)^2) + ((1/3) * (1/7)^2) + ((1/3) * (3/14)^2) - (1/7)^2

= 0.0238095 - 0.0204081

= 0.0034014

= 0.0034

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3 years ago
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vichka [17]
Parallel lines implies that angle w(the known angle 58 degrees) is congruent to angle z(right next to angle 2) and that angle z is congruent to angle 5 because if corresponding angles are congruent to make angle 5 be 58 degrees
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Evaluate the Expression <br><br> 7•4+6-12:4
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the answer to this is four (4)

Step-by-step explanation:

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Westkost [7]

Answer:

2

Step-by-step explanation:

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x = 2

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