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Anastasy [175]
3 years ago
10

The sum of 22 and a number is 41

Mathematics
1 answer:
Mariulka [41]3 years ago
6 0

Answer:

19

Step-by-step explanation:

sum means answer to an addition problem, so 41 - 22 = 19, so 22 + 19 = 41

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The probability mass function of X is f(x)= 1/6, x 1.2...,6 then find out the value
Mumz [18]

For the given probability mass function of X, the mean is 3.5 and the standard deviation is 1.708.

  • A discrete random variable X's probability mass function (PMF) is a function over its sample space that estimates the likelihood that X will have a given value. f(x)=P[X=x].
  • The total of all potential values for a random variable X, weighted by their relative probabilities, is known as the mean (or expected value E[X]) of that variable.
  • Mean(μ) = 1(1/6) + 2(1/6) + 3(1/6) + 4(1/6) + 5(1/6) + 6(1/6).
  • Mean(μ) = (1+2+3+4+5+6)/6
  • Mean(μ) = 21/6
  • Mean(μ) = 3.5
  • The square root of the variance of a random variable, sample, statistical population, data collection, or probability distribution represents its standard deviation. It is denoted by 'σ'.
  • A random variable's variance (or Var[X]) is a measurement of the range of potential values. It is, by definition, the squared expectation of the distance between X and μ. It is denoted by 'σ²'.
  • σ² = E[X²]−μ²
  • σ² = [1²(1/6) + 2²(1/6) + 3²(1/6) + 4²(1/6) + 5²(1/6) + 6²(1/6)] - (3.5)²
  • σ² = [(1² + 2²+ 3² + 4²+ 5²+ 6²)/6] - (3.5)²
  • σ² = [(1 + 4 + 9 + 16 + 25 + 36)/6] - (3.5)²
  • σ² = (91/6) - (3.5)²
  • σ² = 15.167-12.25
  • σ² = 2.917
  • σ = √2.917
  • Standard deviation (σ) = 1.708

To learn more about variance, visit :

brainly.com/question/14116780

#SPJ9

6 0
2 years ago
What’s the median of 82 86 90 94 88 76 74 74 92 96
Galina-37 [17]

Answer:

88 and 76 are the median!

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Is -8.56 a rational or irrational number?
PolarNik [594]
Its a rational number
5 0
3 years ago
Read 2 more answers
Help plss.............
Svet_ta [14]

Answer:

The total cost would be 29.15$

Step-by-step explanation:

multiply 27.50 by 0.06 to get 1.65. Then add 27.50 and 1.65, to get 29.15

4 0
3 years ago
X + 6 = 14; x = 8<br> help pls
Vlada [557]

Answer:

This is correct.

x = 8 is the true/correct answer.

Step-by-step explanation:

You check this by replacing "x" with "8" since x = 8.

8 + 6 = 14.

This is a true statement, so x = 8 is correct.

5 0
3 years ago
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