If two events, A and B are independent, the probability of both A and B happening is the same as the probability of A happening multiplied by the probability of B happenings, that is:

$P(A \cap B) = P(A)P(B)$

In this question:

The statement is $P(A \cap B) = P(A)P(B)$

4 0

2 years ago

C + 1/4c please help me i need this done now

abruzzese [7]

Answer:

$1\frac{1}{4} c$

Step-by-step explanation:

$c+\frac{1}{4}c$

Rewrite the expression

$= 1c+\frac{1}{4} c$

Add

$= 1\frac{1}{4} c$

Therefore, $c+\frac{1}{4}c$ is equal to $1\frac{1}{4} c$ .

I hope this helps!

5 0

3 years ago

Last summers, students who worked earned an average of $80 a week with a standard deviation of $12. What percentage of students

Roman55 [17]

Answer:

2.28%

Step-by-step explanation:

Given:

μ = 80
σ = 12
x = 104

Find z-score:

z = (x - μ)/σ
z = (104 - 80)/12 = 2

Percent value corresponding to 2 as per z-table is 0.9772. This is corresponding to 97.72%.

Percentage of students earned more than $104:

100 - 97.72 = 2.28

5 0

2 years ago