Question

A project is graded on a scale of 1 to 5. if the random variable, x, is the project grade, what is the mean of the probability distribution below? a probability distribution is shown. the probability of 1 is 0.1; 2 is 0.2; 3 is 0.4; 4 is 0.2; 5 is 0.1. 0.2 0.4 1 3

Answer 1

For a particular data generation process, a probability distribution represents the predicted outcomes of various values. The mean of the probability distribution is 3.

What is a probability distribution?

For a particular data generation process, a probability distribution represents the predicted outcomes of various values. The mean, standard deviation, skewness, and kurtosis are all features of probability distributions, which are characterized by the mean, standard deviation, skewness, and kurtosis.

The mean of the probability distribution is determined by the given formula,

$\mu = \sum (x\times P(x))$

Now, substituting the value to know the probability distribution, we will get,

$\mu = (1 \times 0.1)+(2 \times 0.2)+(3 \times 0.4)+(4 \times 0.2)+(5 \times 0.1)\\\\\mu = 0.1+0.4+1.2+0.8+0.5 = 3$

Hence, the mean of the probability distribution is 3.

Learn more about Probability Distribution:

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Answer 2

Answer:

its 3

Step-by-step explanation:

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