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ch4aika [34]
3 years ago
7

Please help me with this probability problem.

Mathematics
1 answer:
Airida [17]3 years ago
6 0

Answer:

0.278

Step-by-step explanation:

5 + 4 = 9

\frac{5}{9} * \frac{4}{8} = 0.2777...

Try to do the others on your own using the information I gave you.

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Suppose the random variables X, Y, and Z have the following joint probability distribution. x y z f ( x , y , z ) 1 1 1 0.05 1 1
Airida [17]

Answer:

Determine the conditional probability distribution of X given that Y = 1 and Z = 2. Round your answers to two decimal places (e.g. 98.76).

answer:

Given that Y = 1 :  2/5

Given that Z = 2 : 3/5

Step-by-step explanation:

The conditional probability distribution of X     F x | yz^( x )

Given that Y = 1

F x | yz . ( x | yz )  = 2/5

Given that z = 2

= 3/5

attached below is the detailed solution

3 0
3 years ago
According to the data, the mean quantitative score on a standardized test for female college-bound high school seniors was 500.
Sveta_85 [38]

Answer:

6.68% of the female college-bound high school seniors had scores above 575.  

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 500

Standard Deviation, σ = 50

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(scores above 575)

P(x > 575)

P( x > 575) = P( z > \displaystyle\frac{575 - 500}{50}) = P(z > 1.5)

= 1 - P(z \leq 1.5)

Calculation the value from standard normal z table, we have,  

P(x > 575) = 1 - 0.9332= 0.0668 = 6.68\%

6.68% of the female college-bound high school seniors had scores above 575.

7 0
3 years ago
What are the two big ideas in the learning of fractions
Oksanka [162]

Answer:

1. There is a numerator and denominator. The numerator is the number on the top and the denominator is the number on the bottom.

2. A fraction is basically a portion of something. There are different methods of dividing, multiplying, adding, and subtracting fractions.

7 0
3 years ago
What is the slope of the line that passes through the points (7, -7) and (8, -13)?
77julia77 [94]

Answer:

Slope = -6

Step-by-step explanation:

Use the slope formula to find the slope (m).

Hope this helped!

brainliest please!

4 0
2 years ago
What is a scalar<br><img src="https://tex.z-dn.net/?f=14%20%5Cdiv%2032" id="TexFormula1" title="14 \div 32" alt="14 \div 32" ali
djyliett [7]
A scalar is an element of a field which is used to define a vector space. A quantity described by multiple scalars, such as having both direction and magnitude, is called a vector.
6 0
3 years ago
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