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pickupchik [31]
3 years ago
13

Suppose that X is a random variable with mean and variance both equal to 20. What can be said about P{0 ≤ X ≤ 40}.

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
5 0

Answer:

P(0 \leq X \40) = \frac{19}{20}

Step-by-step explanation:

We know that:

P(|X - 20| < 20) + P(|X - 20| \geq 20) = 1

So

P(0 \leq X \leq 40) = P(0-20 \leq X-20 \leq 40-20) = P(-20 \leq X \leq 20) = P(|X - 20| \leq 20)

P(|X - 20| \leq 20) = 1 - P(|X - 20| > 20) = 1 - \frac{20}{20^{2}} = \frac{19}{20}

So

P(0 \leq X \40) = \frac{19}{20}

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96 fl oz compared to 8 pt
kirill [66]
Well,
96fl oz is equal to 6 pints.
96 fl oz= 6 pints

So witch is bigger, 6 pints ( 96fl oz) or 8 pints?


Your answer is,<u> 8 pints is greater than 96fl oz (6 pints).</u>


Hope this helped!
Good luck on your home work! (:
3 0
3 years ago
Part 1 - Application
madam [21]

Answer:

see explanation. (I did this exact assignment this morning, and this is very similar to what I submitted)

Step-by-step explanation:

The contrapositive of a conditional is the same as the converse of the inverse of the conditional.

The best way to prove/support this statement is to create an example. You should start by creating a conditional; you can then form the conditional's converse, inverse, and contrapositive. Here is an example:

Conditional: If C, then D. (starting statement)

Converse: If D, then C. (conditional reversed)

Inverse: If not C, then not D. (opposite of the conditional)

Contrapositive: If not D, then not C. (reversed opposite of the conditional)

Based on the information from the example you gave, you can conclude:

The converse of the inverse: If not D, then not C. (reversed opposite of the conditional)

Because: The converse is the conditional reversed (If D, then C). The inverse of the converse, in this case, would then make it the opposite (If not D, then not C).

I have not yet received a grade on this assignment, but I know the information is correct; the amount of explanation you need to give really depends on how your teacher grades. Personally, I just submitted an example (similar to the one above) that was color-coded to help show the different parts of each statement.

I hope this helps! :)

7 0
2 years ago
Find the area of the regular polygon with the given radius or apothem. Why is the area?
Svetradugi [14.3K]

Answer:56.52

Step-by-step explanation:2x3.14=6.28

6.28x3=18.84

18.84x3=56.52

7 0
3 years ago
Which expression can be used to find the volume of the sphere? 10 in. ​
julsineya [31]

Answer:

its the 3rd one

Step-by-step explanation:

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3 years ago
PLZ HELP, GIVING BRAINLIEST!!
ankoles [38]

Answer:

The answer to your question is letter D

Step-by-step explanation:

Data

P1 (3, 10)

P2 (-1, 6)

Process

1.- Calculate the midpoints

Xm = (x1 + x2)/2

Ym = (y1 + y2)/2

x1 = 3   y1 = 10

x2 = -1  y2 = 6

Xm = (3 - 1)/2

     = 2/2

     = 1

Ym = (10 + 6)/2

      = 16/2

      = 8

2.- Write the coordinates of the center

    C = (1, 8)

8 0
4 years ago
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