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8_murik_8 [283]
3 years ago
12

A small university has 200 first-year students. Historically at this university, 88% of first-year students graduate in four yea

rs. Assume that whether or not one student graduates is independent of whether or not another student graduates. Let X represent the number of first-year students who graduate in four years. What are the mean and standard deviation X?
Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
6 0

Answer: c is the answer . 176, 4.60

Step-by-step explanation:

just trust me bro

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There are 221 students on a field trip.
Liula [17]

Answer:

The answer is 31

Step-by-step explanation:

221 divided by 6 is 36-5=31

This is correct because if you divide 221 by 6 you get 36 the subtract 5 from 36 and get 31. To check this answer just do 31+5=36 times 6 which is 216 and 221 minus 5 is 216:)

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3 years ago
Which pairs of angles in the figure below are vertical angles?<br> Check all that apply.
solmaris [256]

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A. and D.

Step-by-step explanation:

6 0
3 years ago
Three brothers share 2 sandwiches equally. Hoe much of a sandwich does each brother get?
melisa1 [442]
Divide 3 by 2 to get 1.5
5 0
3 years ago
Read 2 more answers
Katherine invested $86,000 in an account paying an interest rate of 52%
earnstyle [38]

Answer: $4,331‬

Step-by-step explanation:

I will assume that the question meant 5.2% not 52% as this is quite excessive.

Katherine after 13 years.

Convert the variables;

n = 13 years = 13 * 365 = ‭4,745‬ days

r = 5.2% = 5.2/365 = 5.2/365%

Future value = P * ( 1 + r)^n

= 86,000 * (1 + 5.2/365%)⁴⁷⁴⁵

= $169,068

Michael after 13 years;

If compounded continuously, the formula is;

Future value = Pe^rt

= 86,000 * e⁰.⁰⁵ ˣ ¹³

= $164,737

Difference = 169,068 - 164,737

= $4,331‬

5 0
3 years ago
The price of a European tour includes stopovers at five cities to be selected from 15 cities. In how many ways can a traveler pl
xeze [42]

Answer:

The traveler can plan such a tour in 3003 ways.

Step-by-step explanation:

The order that the cities are chosen is not important, since it is chosen by the company and not by the traveler. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem, we have that:

Combinations of 5 cities from a set of 15. So

C_{15,5} = \frac{15!}{5!10!} = 3003

The traveler can plan such a tour in 3003 ways.

4 0
3 years ago
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