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
GenaCL600 [577]
3 years ago
7

What is the probability that a student selected at random is a boy?

Mathematics
1 answer:
rjkz [21]3 years ago
8 0

Answer:

Pr(B) = 0.69

Pr(J/B) = 0.35

Pr(J∩B) = 0.14

Pr(G/J') = 0.66

Pr(G) = 0.31

Step-by-step explanation:

Applying,

Pr = possible outcome (a)/Total outcome(t)

(1) Pr(B) = a/t............ Equation 1

From the diagram

Given: a = 220+65+35 = 320, t = 220+65+35+145 = 465

Substitute these values into equation 1

Pr(B) = 320/465

Pr(B) = 0.69

(2) Pr(J/B) = (35+65)/(220+65)

Pr(J/B) = 100/285

Pr(J/B) = 0.35

(3) Pr(J∩B) = 65/465

Pr(J∩B) = 0.14

(4) Pr(G/J') = 145/220

Pr(G/J') = 0.66

(5) Pr(G) = 145/465

Pr(G) = 0.31

You might be interested in
What is 729 in a exponent <br> Pls help quickly
xz_007 [3.2K]

Answer:

27×27=729

729^6..........

8 0
3 years ago
Read 2 more answers
Tommy wrote down all of the whole numbers greater than -1 and less than 3 what is the average value of these numbers
erma4kov [3.2K]
0+1+2 / 3 = 1. ..................,..
3 0
3 years ago
Read 2 more answers
How to solve -6(x+8)
Keith_Richards [23]
Multiply -6 by x and -6 by eight.
Ex. -7(x+2)
-7*x + -7*2
-7x -14
4 0
3 years ago
Read 2 more answers
The annual salary for a computer technician at Company A ranges from $41,000 to $63,000, with a mean of $58,000. At Company B, t
alisha [4.7K]

Step-by-step explanation:

i think the mean salary of company B is true becoz mean salary of $ 45000 and $65000 is $ 56000 which is exactly average ....rather than mean salary of company A

7 0
3 years ago
Read 2 more answers
Question 1
Novosadov [1.4K]

Answer: C, -4

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • How do you solve this math problem-2(x+3y)=18
    12·1 answer
  • I need someone help please !!
    12·1 answer
  • Find the distance between each pair of points. Round your answer to the nearest tenth, if necessary.
    9·1 answer
  • A ball is rolled at a velocity of 12m/sec.after 36 seconds,it comes to a stop what is the acceleration of the ball?
    6·1 answer
  • The parameters of a linear function are the slope and the y-intercept
    14·1 answer
  • Units of Capacity
    10·2 answers
  • Mr. Campbell. paid $48 for 12 cartons of juice.
    10·2 answers
  • heath and janet shared a pizza. Heath ate 3/5of the pizza, and janet ate 3/10 of the pizza. what fraction of the pizza did they
    8·2 answers
  • 0.0000024 in scientific notation
    13·1 answer
  • Question
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!