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A teacher asks her students to write down the number of hours studied, rounded to the nearest half hour. She compiles the results and develops the probability distribution below for a randomly selected student. What is the mean of the probability distribution?

A teacher asks her students to write down the number of hours studied rounded to the nearest half hour She compiles the results and develops the probability dis class=

Respuesta :

Answer:

Mean = 1.5

Step-by-step explanation:

We are given a table of probability distribution of students the numbers of hours studied.

We need to find the mean of the probability distribution.

Formula of mean = sum of product of probability and random distribution value.

[tex]\text{Mean}=\sum X_i\times P(X_i)[/tex]

[tex]\text{Mean}=0.5\times 0.07+1\times 0.2+1.5\times 0.46+2\times 0.2+2.5\times 0.07[/tex]

Now we will calculate the mean

[tex]\text{Mean}=0.035+0.2+0.69+0.4+0.175[/tex]

[tex]\text{Mean}=1.5[/tex]

Thus, Mean of the given table is 1.5

Answer:

1.50

Step-by-step explanation: