Answer:
whats the question that is a statement
Step-by-step explanation:
Answer:
Significance of the mean of a probability distribution.
Step-by-step explanation:
- The mean of a probability distribution is the arithmetic average value of a random variable having that distribution.
- For a discrete probability distribution, the mean is given by,
, where P(x) is the probabiliy mass function. - For a continuous probability distribution, the mean s given by,
, where f(x) is the probability density function. - Mean is a measure of central location of a random variable.
- It is the weighted average of the values that X can take, with weights given by the probability density function.
- The mean is known as expected value or expectation of X.
- An important consequence of this is that the mean of any symmetric random variable (continuous or discrete) is always on the axis of symmetry of the distribution.
- For a continuous random variable, the mean is always on the axis of symmetry of the probability density function.
The answer would be 49 + 42b if you multiply 7*7 and 7*6b
Answer:
f(x)=1 (B)
Step-by-step explanation:
f(x) = 2X-7
f(4) = 2(4)-7
=8-7
=1
On the tenth place is 5, after 5 is 6,
because 6≥5,
we need increase the tenth place 5 by 1
so 169.6