Answer to Question #179428 in Statistics and Probability for Analyn vedera

Question #179428

Make a study about how many sheets of paper you consumed weekly in

answering your Self Learning Modules. Record the quantity (total number of sheets)

per subject, then construct a probability distribution. Compute the mean, variance,

and the standard deviation of the probability distribution you made. Interpret the

result, then find out how many weeks you will consume 50 sheets of pad paper

Expert's answer

The probability distribution is given as-

Mean="\\sum X.P(X)=10.8"

Variance="E(X^2)-[(E(X)]^2=124-116.64=7.36"

Standard deviation ="\\sqrt{variance}=\\sqrt{7.36}=2.71"

As the overall consumption of sheets taken above from the table in all the subjects is 50 per week

Therefore

Number of weeks in which we consumed 50 sheets of pad paper is 1.

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Comments

Assignment Expert

26.04.21, 22:16

Dear Jm santidad, the values of X, P(X), X*X were given in the third, the fourth and the sixth columns respectively. The specific values of X*X are multiplied by the corresponding values of P(X), suming up all these products one obtains E(X*X), The value E(X) is the mean, it is the sum of products of X by P(X).

Assignment Expert

26.04.21, 22:06

Dear Janmae Joe, if you divide the specific number of sheets by the total number of sheets, then you will get the corresponding value for P(X), for example 12/50=0.24 in case of Math.

Jm santidad

22.04.21, 06:49

How did you get it ?£(x²) - [(E(x)]² = 124 - 116.64 = 7.36?

Janmae Joy

21.04.21, 18:38

where did you get the P(x)? I really don't know how to make one.