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Molodets [167]
2 years ago
13

compute the mean and variance of the following discrete probability distribution. (round your answers to 2 decimal places.) x p(

x) 0 0.2 1 0.4 2 0.3 3 0.1 click here for the excel data file
Mathematics
1 answer:
a_sh-v [17]2 years ago
6 0

The  determined value of mean µ is 1.3 and variance σ² is 0.81.

What is mean and variance?

  • A measurement of central dispersion is the mean and variance. The average of a group of numbers is known as the mean.
  • The variance is calculated as the square root of the variance.
  • We can determine how the data we are collecting for observation are dispersed and distributed by looking at central dispersion.

The table is attached as an image for reference.

Mean µ = ∑X P(X)

         µ = 1.3

Variance (σ² ) = ∑ X² P(X)- (µ)²

                       = 2.5-(1.3)²

                (σ² ) = 0.81

The  determined value of mean µ is 1.3 and variance σ² is 0.81.

Learn more about mean and variance here:

brainly.com/question/25639778

#SPJ4

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IRISSAK [1]

Answer:

First angle = x = 35°

Second angle = 2x = 2(35) = 70°

Third angle = 2x+5 = 70 + 5 = 75°

Step-by-step explanation:

<u>Given : </u>

The second angle measures twice the first, and the third angle measures 5 more than the second.

Sum of angles = 180°

<u>Solution : </u>

Let the first angle be x

According to the given question :

Second angles = 2x

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we know that Sum of angles = 180°

<u>Solving x value :</u>

x + 2x + (2x+5) = 180°

5x + 5 = 180

5x = 180 - 5

5x = 175

x = 175/5

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<u>Finding the measure of each angle : </u>

First angle = x = 35°

Second angle = 2x = 2(35) = 70°

Third angle = 2x+5 = 70 + 5 = 75

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