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DerKrebs [107]
3 years ago
11

How to find exponential distribution Mean and variance

Mathematics
1 answer:
Rufina [12.5K]3 years ago
4 0

Answer:

To calculate the mean, you're multiplying every element by its probability (and summing or integrating these products). Similarly, for the variance you're multiplying the squared difference between every element and the mean by the element's probability. and X = {1, 2, 3}, then Y = {1, 4, 9}.

<h3><u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u></h3>

<u>\frac{}{}</u>

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Determine which lines in the diagram are parallel. A) a || b B) b || c C) a || c D) b || d
spayn [35]

Line a and line c are parallel lines that are given as a || c. Then the correct option is C.

<h3>How are parallel straight lines related?</h3>

Parallel lines have the same slope since the slope is like a measure of steepness and since parallel lines are of the same steepness, thus, are of the same slope.

Since the given parallel line has equation y = 2x + 2, thus its slope is 2 and thus, the slope of the needed line is 2 too.

Then we have

The distance between line a and line c is constant. Then line a and line c are parallel lines.

Line a || line c. Then the correct option is C.

Learn more about parallel lines here:

brainly.com/question/13857011

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7 0
2 years ago
Choose the expression that would equal the number of hours in the following question.
Minchanka [31]
<span>B. 285/302. This is the correct answer because it is the only choice which is roughly the same ratio as 47.5/50.5 which is the ratio needed to determine how long it would take to go 47 1/2 miles in a car that averages 50 1/2 miles per hour. The mathematical equation which represents the problem is: 50.5/1 = 47.5/A (A = hours) which is the same as 50.5 A = 47.5 which means A = 47.5/50.5 which means A = .94 hours. 285/302 also equals .94.</span>
5 0
3 years ago
Two fractions whose product is -3/5
lukranit [14]
Do you have multiple choice answers?

3 0
3 years ago
I'LL GIVE BRAINLIEST:<br><br> A or B
s2008m [1.1K]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
The function f(x) = StartRoot negative x EndRoot is represented by the graph. Which statement is correct?
Svetlanka [38]

Answer:

D. The range of the function is all real numbers greater than or equal to 0.

Step-by-step explanation:

The graph of the function y=\sqrt{-x} is shown in attached diagram.

1. The domain of the function is the set of all possible values for input (for x). Hence, the domain of this function is

x\in (-\infty,0]

2. The range of the function is the set of all possible values for output (for y), so the range of this function is

y\in [0,\infty)

As you can see, only option D is true - The range of the function is all real numbers greater than or equal to 0.

6 0
3 years ago
Read 2 more answers
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