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3 years ago

I need help!!!!!!!!!?

Mathematics

1 answer:

ycow [4]3 years ago

5 0

Is it radius or circumference?

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Statistics Probability

andriy [413]

Answer:

Explained below.

Step-by-step explanation:

Denote the variable as follows:

M = male student

F = female student

Y = ate breakfast

N = did not ate breakfast

(a)

Compute the probability that a randomly selected student ate breakfast as follows:

$P(Y)=\frac{n(Y)}{N}\\\\=\frac{198}{330}\\\\=0.60$

(b)

Compute the probability that a randomly selected student is female and ate breakfast as follows:

$P(F\cap Y)=\frac{n(F\cap Y)}{N}\\\\=\frac{121}{330}\\\\=0.367$

(c)

Compute the probability a randomly selected student is male, given that the student ate breakfast as follows:

$P(M|Y)=\frac{n(M\cap Y)}{n(Y)}\\\\=\frac{77}{198}\\\\=0.389$

(d)

Compute the probability that a randomly selected student ate breakfast, given that the student is male as follows:

$P(Y|M)=\frac{n(Y\cap M)}{n(M)}\\\\=\frac{77}{154}\\\\=0.50$

(e)

Compute probability of the student selected "is male" or "did not eat breakfast" as follows:

$P(M\cup N)=P(M)+P(N)-P(M\cap N)\\\\=\frac{n(M)}{N}+\frac{n(N)}{N}-\frac{n(M\cap N)}{N}\\\\=\frac{n(M)-n(N)-n(M\cap N)}{N}\\\\=\frac{154+132-77}{330}\\\\=0.633$

(f)

Compute the probability of "is male and did not eat breakfast as follows:

$P(M\cap N)=\frac{n(M\cap N)}{N}\\\\=\frac{77}{330}\\\\=0.233$

4 0

3 years ago

How many hundreds does 4 thousands equal

OverLord2011 [107]

The question is asking for you to divide 4,000/100. This equals 40. So, there are 40 hundreds in 4,000.

4 0

3 years ago

For the line perpendicular to y = 12, the slope is undefined because the denominator of the slope is 0. For the line parallel to

ASHA 777 [7]

I think the answer is b

7 0

2 years ago

Match the rates and unit rates.

lesya692 [45]

first box - $2.90 per pound
second- $2.50 per pound
third- $2.98 per pound
fourth- $2.00 per pound

6 0

2 years ago

The height of one square pyramid is 12 m. A similar pyramid has a height of 6 m. The volume of the larger pyramid is 400 m3. Det

valentinak56 [21]

A) Scale factor of the smaller pyramid to the larger pyramid in simplest form:
6 m / 12 m = 1/2

b) Ratio of the areas of the bases of the smaller pyramid to the larger pyramid:
(1/2)^2 = 1/4 

c) Ratio of the volume of the smaller pyramid to the larger:
(1/2)^3 = 1/8 

d) Volume of the smaller pyramid:
(1/8) * 400 m^3 = 50 m^3

4 0

3 years ago