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ki77a [65]
3 years ago
10

Identify the expression for calculating the mean of a binomial distribution

Mathematics
1 answer:
TEA [102]3 years ago
8 0

Option C: np is the expression used for calculating the mean of a binomial distribution.

Explanation:

From the options, we need to determine the expression that is used for calculating the mean of a binomial distribution.

<u>Option A: npq</u>

The variance of the binomial distribution can be calculated using the expression npq.

Hence, Option A is not the correct answer.

<u>Option B: </u>\sqrt{npq}<u></u>

The standard deviation of the binomial distribution can be calculated using the expression \sqrt{npq}

Hence, Option B is not the correct answer.

<u>Option C: np</u>

The mean of the binomial distribution can be calculated using the expression np

Hence, Option C is the correct answer.

<u>Option D</u>: \sum\left[x^{2} \cdot P(x)\right]-\mu^{2}

The mean of the binomial distribution cannot be determined using the expression \sum\left[x^{2} \cdot P(x)\right]-\mu^{2}

Hence, Option D is not the correct answer.

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Rotate the triangle 180° about the cross.
V125BC [204]

A triangle is a three-edged polygon with three vertices. If the triangle is rotated 180° about the cross then it will be done as shown below.

<h3>What is a triangle?</h3>

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to b

If the triangle is rotated 180° about the cross then it will be done as shown below. This is because the triangle is 2 units away from the cross(dot) therefore, after rotation it will be at the same distance from the point.

Learn more about Triangle:

brainly.com/question/2773823

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6 0
1 year ago
Margaret bought a video game, her father gave her 0.2 of the money, her aunt gave 0.5 of the money and she saved the rest. She s
const2013 [10]

Answer:

if Im correct it should be $8.40

Step-by-step explanation:

why well if you think of breaking down by say 1/4 of 168 all you do is divide 4 which is the whole amount by 0.2 which is the amount the father gave her so 4/0.2= 20 the you take your whole 168 and divide by 20 which the whole number for 0.2 the your answer should be this 168/20= 8.4 which then i assumed it was $8.40 hopefully that is correct hehe

5 0
2 years ago
if you have four rolls of quarters three rolls of Dimes and six rolls of nickels how much do you have
xz_007 [3.2K]
We know that
the number of coins that each roll contains is
<span>rolls of quarters-------> 40 coins
</span><span>rolls of Dimes---------> 50 coins
</span><span>rolls of nickels------> 40 coins

</span><span>four rolls of quarters------> 4*40*$0.25-----> $40
</span>t<span>hree rolls of Dimes-----> 3*50*$0.10------> $15
</span><span>six rolls of nickels-------> 6*40*$0.05-----> $12

total=[40+15+12]------> $67

the answer is
$67</span>
3 0
3 years ago
How to construct 165 degress angle with compass and scale and show picture
bulgar [2K]
To start with, draw a line say AB.
At point B, construct 60 degrees.
Bisect the angle to get 30 degrees.
Bisect the 30 degrees to get 15 degrees.
The angle opposite the 15 degrees is 165 degrees
8 0
2 years ago
A vegetable garden and a surrounding path are shaped like a square that together are 12 ft wide. The path is 2 feet wide. The th
Snezhnost [94]

Answer:

80 ft²

Step-by-step explanation:

The area of the path is equal to the area of the overall square minus the area of the garden.

Area of a square is the side length squared:

A = s²

The overall square has a side length of 12 feet.  The side length of the garden is 12 - 2 - 2 = 8 feet.  So the area of the path is:

A = 12² - 8²

A = 144 - 64

A = 80

The area of the path is 80 ft².

7 0
3 years ago
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