1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aleksley [76]
3 years ago
15

Six balls are selected at random without replacement from an urn containing three white balls and five blue balls. find the prob

ability of the given event. (round your answer to three decimal places.) two or three of the balls are white.
Mathematics
1 answer:
LenKa [72]3 years ago
5 0
<span>25/28 is the probability of picking two or three white balls. Given that there are only 8 balls in total and of those 8, 5 of them are blue, this problem can be turned around to "What's the probability of selecting 5 blue balls?" And then subtracting that result from 1. There are a total of 6 ways of selecting all 5 blue balls. The only difference is when the single white ball is selected. The 6 ways are BBBBBW, BBBBWB, ..., WBBBBB. So let's calculate the probability of each of those 6. 5/8 * 4/7 * 3/6 * 2/5 * 1/4 * 3/3 + 5/8 * 4/7 * 3/6 * 2/5 * 3/4 * 1/3 + 5/8 * 4/7 * 3/6 * 3/5 * 2/4 * 1/3 + 5/8 * 4/7 * 3/6 * 3/5 * 2/4 * 1/3 + 5/8 * 3/7 * 4/6 * 3/5 * 2/4 * 1/3 + 3/8 * 5/7 * 4/6 * 3/5 * 2/4 * 1/3 = ? If you look closely at each of the 6 lines, you'll realize that the numerator will always be the product of 5!3 and the denominator will be 3*4*5*6*7*8. So, let's simplify to 6*5!3/(3*4*5*6*7*8) = 6*5*4*3*2*3/(3*4*5*6*7*8) = 2*3/(7*8) = 3/(7*4) = 3/28 Now we just need to calculate 1 - 3/28 = 28/28 - 3/28 = 25/28</span>
You might be interested in
EASY POINTS ASAP HELP
STatiana [176]
The answer is 10,5 i think
5 0
3 years ago
Read 2 more answers
At a local health club, a researcher samples 75 people whose primary exercise is cardiovascular and 75 people whose primary exer
ivolga24 [154]

Answer:

A

Step-by-step explanation:

Basically, this is an observational study because the researcher does not apply any treatment.

It's not an experiment because there is no experimentation involved. :)

It's not double-blind because in that case the researcher would have to apply something to two kinds of groups. one aware one the other not. not the case.

It's not D because  The observations are comparing two kinds of subjects and they are not looking for a cause and effect.

8 0
3 years ago
Read 2 more answers
two rectangular properties share a common side. Lot is 33 feet wide and 42 feet long. The combined area of the lots is 1,848 squ
klio [65]

First, find the area of lot A.

To find the area, multiply the length by the width.

33*42=1,386

Now, subtract the area of lot a from the total area. This will give us the area of lot b.

1,848-1,386=462

The area of lot b is 462 square feet.

Finally, divide the area of lot b (462) by its length to find the width. Since they both share a side, we know that it’s length is 42 feet.

462/42=11

Lot b is 11 feet wide.

Hope this helps!

4 0
3 years ago
I just need help typing it out
Lena [83]
Ok so basically what u need to do is
7 0
3 years ago
Simplify (5r^2t)^2(3r^0t^4)
Snezhnost [94]
Answer


75r^4 t^2 + 25r^4 t^6
8 0
3 years ago
Other questions:
  • For her geography project, Luthnie built a clay
    8·1 answer
  • A car travels at a speed of 85 miles per hour.how far will it travel in 15minutes?
    13·1 answer
  • Leticia save 30% of her monthly take-home pay to buy a set of drums your monthly take-home pay is $1340 how much does she save e
    15·1 answer
  • (100 POINTS) Can anyone solve this math equation for me? Thank you!
    12·2 answers
  • Is 11 1/3 greater than 34/3
    6·1 answer
  • Solve problems <br>8 1/3× 3/5​
    8·1 answer
  • Which composition of similarity transformations map polygon ABCD to polygon A’B’C’D’? Help ASAP PLZZZZ
    6·2 answers
  • ILL MARK BRAINLIST
    13·1 answer
  • Calculate the slope of each line
    5·1 answer
  • Justice has a rectangular lot that is 125ft by 175ft. If he wants to place a fence around the outer edge of the property, how ma
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!