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aleksklad [387]
3 years ago
13

If a binomial event has a probability of success of 0.4, how many successes would you expect out of 6000 trials?

Mathematics
2 answers:
Zepler [3.9K]3 years ago
4 0

Answer:

Total number of successes = 2400

Step-by-step explanation:

Probability of success of an event is given to be 0.4

⇒ p = 0.4

Also, Probability of failure = 1 - p

⇒ q = 1 - 0.4

⇒ q = 0.6

Also, Total number of trials = 6000

⇒ n = 6000

We need to find the total number of successes

So, Total number of successes = n × p

⇒ Total number of successes = 6000 × 0.4

⇒ Total number of successes = 2400

Feliz [49]3 years ago
3 0
You should expect about 2400 successes because as a percent .4=40%
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ki77a [65]

Answer:

A)

15 hours

B)

108 hours

C)

2074.29 miles

Step-by-step explanation:

Under the assumption the earth is a perfect circle, then in one complete rotation about its axis ( 24 hours) the Earth will cover 360 degrees or 2π radians.

A)

In every 24 hours the earth rotates through 360 degrees ( a complete rotation). We are required to determine the length of time it will take the Earth to rotate through 225 degrees. Let x be the duration it takes the earth to rotate through 225 degrees, then the following proportions hold;

(24/360) = (x/225)

solving for x;

x = (24/360) * 225 = 15 hours

B)

In 24 hours the earth rotates through an angle of 2π radians (a complete rotation) . We are required to determine the length of time it will take the Earth to rotate through 9π radians. Let x be the duration it takes the earth to rotate through 9π radians, then the following proportions hold;

(24/2π radians) = (x/9π radians)

Solving for x;

x = (24/2π radians)*9π radians = 108 hours

C)

If the diameter of the earth is 7920 miles, then in a day or 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle;

circumference = 2*π*R = π*D

                         = 7920*3.142

                         = 24891.43 miles

Therefore a point on the equator covers a distance of 24891.43 miles in 24 hours. This will imply that the speed of the earth is approximately;

(24891.43miles)/(24 hours) = 1037.14 miles/hr

The distance covered by the point in 2 hours will thus be;

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5 0
3 years ago
(03.01 MC)
vekshin1

Answer:

Option (1) will be the answer.

Step-by-step explanation:

Coordinates of the points A and B lying on the line f are (0, 2) and (2, 0) respectively.

Slope of the line f,

m_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m_{1}=\frac{2-0}{0-2}

m_{1}=-1

After dilation of line f by a scale factor of 2, coordinates of A' and B' will be,

Rule for dilation,

(x, y) → (kx, ky)

Where k = scale factor

A(0, 2) → A'(0, 4)

B(2, 0) → B'(4, 0)

Slope of line f',

m_{2}=\frac{0-4}{4-0}

m_{2}=-1

Since, m_{1}=m_{2}=-1

Therefore, both the lines f and f' will be parallel.

Option (1) will be the answer.

6 0
3 years ago
What is the area of the figure ?
Savatey [412]

Answer:

48

Step-by-step explanation:

L = Length  W = Width  H = Height  B = Base

8L x 4W = 32

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4B + 4H = 8

8 + 8 = 16

16 + 32 = 48

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3 years ago
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