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Stells [14]
2 years ago
6

At a college, 71% of courses have final exams and 45% of courses require research papers. Suppose that 26% of courses have a res

earch paper and a final exam.
Part (a)

Find the probability that a course has a final exam or a research paper.


Part (b)

Find the probability that a course has neither of these two requirements.
Mathematics
1 answer:
Degger [83]2 years ago
3 0

Answer:

.9 or 90%

.1 or 10%

Step-by-step explanation:

E= Exam

P=Paper

E= .71

P= .45

E∩P=.26

A.) E∪P=?

E∪P= E+P-E∩P

.71+.45-.26= .9

B.) E'∩P' = (E∪P)'

(E∪P)' = 1-.9 = .1

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1 year ago
The line graph shows the number of goals scored
Neporo4naja [7]

Answer:

a) 1 game

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Step-by-step explanation:

a)

As we can see in the line graph, where we have the 0 for the number of goals scored, the graph indicates only 1 in the number of games, so we have only 1 game where no goals were scored.

b)

To find the total number of goals scored, we multiply the goals scored by the number of games for that score, and then sum them all:

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c)

To find the median, we put all the goals in crescent order, and then find the value in the middle. As we have 18 games, the middle value will be an average of the 9th and 10th terms.

We have 1 number 0, 4 numbers 1 and 5 numbers 2 in the beginning, so for these 10 numbers, the 9th and the 10th are the score 2, so the median is 2.

8 0
3 years ago
Hippalectryon
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2 years ago
June made a design with 6 equal tiles. One tile is yellow, 2 tiles are blue, and 3 tiles are purple. What fraction of the tiles
ludmilkaskok [199]

Answer: \frac{2}{3}

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

yellow      or       purple

    \frac{1}{6}          +           \frac{3}{6}

=               \frac{4}{6}

=               \frac{2}{3}

6 0
3 years ago
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A,C,B
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2 years ago
Read 2 more answers
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