All categories

3 years ago

Please help me!..........

Mathematics

1 answer:

Anastaziya [24]3 years ago

4 0

Answer:

Step-by-step explanation:

Look at the picture.

To find the Median, place the numbers in value order and find the middle number (right picture).

Median = $39,000

You might be interested in

1) Given P(A) = 0.3 and P(B) = 0.5, do the following.

Delicious77 [7]

Answer:

1) a) 0.8

b) 0.6

2) a) 0.08

b) 0.14

Step-by-step explanation:

1) Given

$P(A) = 0.3$ and $P(B) = 0.5$

Let us learn about a formula:

$P(A\ or\ B) = P(A) +P(B) -P(A\ and\ B)\\OR\\P(A\cup B) = P(A) +P(B) -P(A\cap B)$

(a) If A and B are mutually exclusive i.e. no common thing in the two events.

In other words:

$P(A\ and\ B)$ = $P(A \cap B)$ = 0

Using above formula:

$P(A\ or\ B) = P(A) +P(B) -P(A\ and\ B)\\\Rightarrow P(A\ or\ B) = 0.3 + 0.5 -0 = \bold{0.8}$

(b) P(A and B) = 0.2

Using above formula:

$P(A\ or\ B) = P(A) +P(B) -P(A\ and\ B)\\\Rightarrow P(A\ or\ B) = 0.3 + 0.5 -0.2 = \bold{0.6}$

*************************************

1) Given

$P(A) = 0.4$ and $P(B) = 0.2$

Let us learn about a formula:

$P(A\ and\ B) = P(B) \times P(A/B)$ for dependent events

$P(A\ and\ B) = P(A) \times P(B)$ for independent events.

(a) If A and B are independent events :

Using the above formula for independent events:

$P(A\ and\ B) = 0.4 \times 0.2 = \bold{0.08}$

(b) $P(A / B) = 0.7$

Using above formula:

$P(A\ and\ B) = P(B) \times P(A/B) = 0.2 \times 0.7 = \bold{0.14}$

6 0

3 years ago

Midway High School has 1500 students. The school district requires that there be 2 janitors for every 125 students.

Phantasy [73]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

I cant understand this.

djverab [1.8K]

Multiply the top one by 3 for x, so you can eliminate x and find y

then plug in the y into one of the equations to find x

7 0

3 years ago

You have four cards, labeled 2-5. What is the probability of drawing a number less than 3, putting the card back, then drawing a

Usimov [2.4K]

$|\Omega|=4^2=16\\ |A|=1\cdot 3=3\\\\ P(A)=\dfrac{3}{16}\approx19\%$

3 0

3 years ago

Write the following comparison as a ratio reduced to lowest terms.<br><br> 88 quarters to 30 dollars

LUCKY_DIMON [66]

You need to find common factors. The factors of 88 are 1 and 88, 2 and 44, 4 and 22, and 8 and 11. The factors of thirty are 1 and 30, 2 and 15, and 5 and 6. The greatest common factor is 2 so the ratio is 44:15.

6 0

3 years ago