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
blsea [12.9K]
2 years ago
8

a survey was taken of children between the ages 7 and 12. let A be the event that the person rides the bus to school, and let B

be the event that the person has 3 or more siblings.

Mathematics
1 answer:
son4ous [18]2 years ago
3 0

Answer:

The statement is true about whether A and B are independent eventa is fourth option:

A and B are not independent events because P(A/B)=0.375 and P(A)=0.25

Step-by-step explanation:

Let A be the event that the person rides the bus to school, then:

P(A)=75/300

P(A)=0.25

Let B be the event that the person has 3 or more siblings, then:

P(B)=24/300

P(B)=0.25


P(A/B)=9/24

P(A/B)=0.375


Like P(A/B)=0.375 is different to P(A)=0.25 the events are not independent


Answer. Fourth option:

A and B are not independent events because P(A/B)=0.375 and P(A)=0.25

You might be interested in
You work at a T-shirt printing business. Of the 2,800 T-shirts shipped, 396 have a defect. What is the experimental probability
ElenaW [278]
396 out of 2800 shirts are defected.
396/2800  * 100 = 14.1% of the shirts were defected
7 0
3 years ago
Read 2 more answers
In math what is 3x-5
avanturin [10]
It is 3 x -5 = -15 (x is times )
7 0
3 years ago
Read 2 more answers
Mekala has an MP3 player called the Jumble. The Jumble randomly selects a song for the user to listen to. Mekala's Jumble has 4
sammy [17]

Answer:

Mekala Jumble has 4 techno songs, 2 country songs, and3 jazz songs on it.

Ratio of techno songs,to country songs,to jazz songs= 4: 2 : 3

Whatever be total  number of songs, let the number of techno songs, country songs,and jazz songs be  4 x,  2 x, and  3 x.

Total number of songs that Mekala plans to Listen = 2 70

Then , 4 x + 2 x + 3 x= 270

9 x = 270

Dividing both sides by 9, we get

x = 30

So, Number of techno songs = 4 × 30= 120

Number of techno songs = 2 × 30= 60

Number of jazz songs = 3 × 30= 90

Option (b) b) Close to 60 country songs but probably not exactly 60 country songs  ,is true option regarding number of songs listen by Mekala.

Step-by-step explanation:

4 0
3 years ago
Jared has 12 more comic books than Zoe. If they have 28 comic books
ZanzabumX [31]

Answer:

20 comic books

Step-by-step explanation:

Let us first <u>set up a variable</u>, x, for the number of books that Zoe has. If Jared has 12 more comics than Zoe, he would have x+12 books.

Given that Zoe and Jared have a total of 28 comic books, let us write an <u>equation</u> and solve for x:

x+x+12=28\\2x+12=28

Now that we have a <u>simplified</u> version of the equation, let us solve for x by <u>isolating the variable</u> on the left side:

2x=28-12\\2x=16\\x=8

We now know that x=8, and also that Jared has x+12 books. To find the number of comic books Jared has, let us <u>add</u> 12 to x:

x+12=\\8+12=\\20\\

Therefore, Jared has 20 comic books.

<em>I hope this helps! Please let me know if you have any further questions :)</em>

4 0
2 years ago
How do I Expand (2x − 1)^6
Veronika [31]

Answer:

well if u do this

(2x-1)(2x-1)(2x-1)(2x-1)(2x-1)(2x-1)

it would be the expanded form for (2x-1)^6

Step-by-step explanation:

i um learned it before so...

6 0
2 years ago
Other questions:
  • Gary has to pay a yearly fee of $100 to have access to his boat on a lake. He also has to pay $25 every time (
    14·1 answer
  • Write a decimal that is 1 tenth of 3.0
    6·1 answer
  • Convert these plsssssssss
    7·1 answer
  • The number of hours a group of contestants spent preparing for a quiz show are listed below. What is a frequency table that repr
    13·1 answer
  • G(x)=4x-7 find g(-9)
    14·2 answers
  • Which expression below gives the average rate of change of the function g(x) = -x2 - 4x on the interval 6 ≤ x ≤ 8 ?
    7·2 answers
  • Goran ran three times last week. Here are the distances he ran (in kilometers).9.94,6.65,10 What is the total distance Goran ran
    12·1 answer
  • What is the sum or difference of (x+18)+(-x+4)​
    9·1 answer
  • A. Y = 1/3(3)^x<br> B. Y= 3(1/3)^x<br> C. Y= (1/2)^x +2<br> D. Y=(2)^x - 1
    9·1 answer
  • Given f(x) = 5 - x?, find f(3).
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!