Answer:
0.75 ;
150
Step-by-step explanation:
Probability of rolling two even numbers :
{1, 2, 3, 4, 5, 6}
P(even) = 3 / 6 = 1/2
From a roll of 2 dice :
P(even) * P(even) = 1/2 * 1/2 = 1/4 = 0.25
P(not even) = 1 - 1/4 = 3/4
X : ____ 6 _______ - 1
P(x) ____ 0.25 ____ 0.75
Expected value :
Σx*p(x) = (6*0.25) + (-1 * 0.75)
= 1.50 - 0.75
= 0.75
If 200 games are played :, n = 200
Expected value * n
0.75 * 200
= 150
Using the Pythagorean theorem to solve this, d=26, here's how.
a^2+b^2=c^2
plug in the numbers you already have
10^2+24^2=d^2
100+578=676
676=d^2
take the square root of that
√676=26
d=26
The batting average of a baseball player is classified as a numeric continuous variable.
<h3>What are categorical and numerical variables?</h3>
- Categorical variables assume labels, for example, good or bad.
- Numerical variables assume numbers, as it own name says.
A batting average is given by the <u>number of hits divided by the number of at bats</u>, hence it is a numeric value.
<h3>What are continuous and discrete variables?</h3>
- Continuous variables assume real values.
- Discrete variables assume integer values.
The batting average is a real number, hence it is also a continuous variable.
More can be learned about classification of variables at brainly.com/question/17226865
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21 because that's the only people that you have information on.
