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kramer
4 years ago
8

The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall sem

ester on the basis of past experience.Admissions Probability1,060 0.61,400 0.11,540 0.3a) What is the expected number of admissions for the fall semester?
Mathematics
1 answer:
svlad2 [7]4 years ago
8 0

Answer:

The expected number of admissions for the fall semester is approximately 1248 students.

Step-by-step explanation:

We are given the following information in the question:

Number of Students:      1,060         1,400        1,540

               Probability:       0.61           0.11            0.3

Formula:

\text{Expectation} = E(x) = \sum xP(x)

Expected number of admissions for the fall semester =

E(x) = \sum xP(x)\\= (1060\times 0.61) + (1400\times 0.1) + (1540\times 0.3)\\=1248.6

Hence, the expected number of admissions for the fall semester is approximately 1,248 students.

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iris [78.8K]

The volume of the solid generated by the revolution is 33.5 cubic units.

<u>Step-by-step explanation:</u>

It is given that, the diameter of the semi-circle is 4 and it is rotated to one full rotation around its diameter.

A solid generated when a semicircle is being rotated about its diameter is called a "SPHERE".

Therefore, the volume of the solid generated by the revolution is the volume of the sphere.

The formula for volume of the sphere is given by,

Volume of sphere = (4/3)πr³

where, r is the radius and π has the default value of 3.14

Here, the given diameter is 4.

To find the radius = diameter/2

radius = 4/2 = 2.

Now, to calculate volume of sphere substitute r=2 and π=3.14

volume of the sphere = (4/3)×3.14×2³

⇒ (4/3)×3.14×8

⇒ 100.48 / 3

⇒ 33.49 (approximately 33.5)

Therefore, the volume of the solid generated by the revolution is 33.5 cubic units.

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3 years ago
A trapezoid has interior angle measures of 90°, 90°75 and degrees. Find the measure of angle I in the traperoid. Enter
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the answer is twenty five degrees

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3 years ago
I have a 6 grader thst needs help with percentages; what assistance do you have here.
mr Goodwill [35]

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Step-by-step explanation:

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Step-by-step explanation:

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4 0
3 years ago
Y + 8.3 = 12.7 show me how to got the answer
scoray [572]
Y + 8.3 = 12.7.....subtract 8.3 from both sides
y + 8.3 - 8.3 = 12.7 - 8.3...simplify
y = 4.4 <===

u can also check ur answer...
4.4 + 8.3 = 12.7
12.7 = 12.7 ...correct
6 0
3 years ago
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