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
vova2212 [387]
2 years ago
14

2. An exam readiness awareness taskforce at a Fremont National university sampled 200 students after the midterm to ask them whe

ther they went partying the week-end before the midterm or spent the week-end studying, and whether they did well or poorly on the midterm. The following result was obtained:Did Well on the Midterm Did Poorly on the Midterm Studied for the Midterm 75 25 Went Partying 40 60 1. Referring to the table above, what is the probability that a randomly selected student did poorly on the midterm or went partying the weekend before the midterm? a) (40/200) or 20% b) (75+40+25)/200 or 70% c) (40+60+25)/200 or 63% d) (75+40+60/200 or 88% e) None of the above
Mathematics
1 answer:
k0ka [10]2 years ago
3 0

Answer:

c) (40+60+25)/200 or 63%

Step-by-step explanation:

n= 200 students

Did Well on the Midterm and  Studied for the Midterm = 75

Did Well on the Midterm and Went Partying = 40

Did Poorly on the Midterm and Studied for the Midterm = 25

Did Poorly on the Midterm and Went Partying = 60

The number of students that did poorly on the midterm or went partying the weekend before the midterm is given by the sum of all students who did poorly to all students who went partying minus the number of students who did Poorly on the Midterm and Went Partying:

N=(25+60)+(40+60) - 60\\N= 125

The probability that a randomly selected student did poorly on the midterm or went partying the weekend before the midterm is given by:

P = \frac{N}{n}=\frac{125}{200} = 0.63 = 63\%

You might be interested in
How could you convert<br> the 3/8of an inch into sixteenths?
BARSIC [14]

Answer:

6/16

Step-by-step explanation:

To get 16ths multiply both the top and bottom by 2

3*2=6

8*2=16

6/16ths =0.375

3/8ths=0.375

4 0
3 years ago
Maura can buy daffodil bulbs in packages of 3 for $5.37 or in packages of 2 for $4.52. How much money does she save by buying 30
fredd [130]

Answer:

  $14.10

Step-by-step explanation:

To have 30 bulbs, Maura can buy 10 packages of 3 at $5.37 each, for a total of $53.70. Or, she can buy 15 packages of 2 at $4.52 each, for a total of $67.80.

Buying in packages of 3, Maura saves $67.80 -53.70 = $14.10.

7 0
3 years ago
Which system of equations can be used to find the roots of the equation 4x^2=x^3+2x?
irina [24]
Next time, please share the answer choices.
Starting from scratch, it's possible to find the roots:

<span>4x^2=x^3+2x should be rearranged in descending order by powers of x:

x^3 - 4x^2 + 2x = 0.  Factoring out x:  </span>x(x^2 - 4x + 2) = 0

Clearly, one root is 0.  We must now find the roots of (x^2 - 4x + 2):

Here we could learn a lot by graphing.  The graph of y = x^2 - 4x + 2 never touches the x-axis, which tells us that (x^2 - 4x + 2) = 0 has no real roots other than x=0.  You could also apply the quadratic formula here; if you do, you'll find that the discriminant is negative, meaning that you have two complex, unequal roots.
5 0
2 years ago
Read 2 more answers
Which are vertical angles?<br> O AFE and BFD<br> O BFC and DFE<br> O AFE and CFD<br> O BFC and EFA
mel-nik [20]

the correct answer is a, because a vertical angle is made of 2 intercepting lines.

3 0
2 years ago
(06.01)The tables below show four sets of data:
Yakvenalex [24]
For it to be non-linear, the rate of change cannot be constant.  For the first table the rate is a constant 1 and the second table has a constant rate of -1.  The 3rd and 4th tables have no constant rate and thus are non-linear.

The 4th table is increasing while the 3rd table is decreasing.  

So the 3rd table, Set C, is the only non-linear negative association between x and y. 
3 0
3 years ago
Read 2 more answers
Other questions:
  • 49.5 is what percent of 33
    14·1 answer
  • Which of the following best describes the science of ecology?
    14·1 answer
  • (3.2 x 104) + (1.4 x 103)
    15·1 answer
  • The middle school is 2.72 Kilometers from Kim's house and 1.54 kilometers from Terri's house. How much farther in meter does Kim
    8·1 answer
  • Solve for x, y and z. PLEASE SOLVE ASAP I WILL GIVE 50 POINTS
    13·1 answer
  • Explain why the square root of 38 is an irrational number.<br><br> Pls Help Me.
    14·1 answer
  • Find the qoutient 13 divided by 1649 plz for me
    11·1 answer
  • Sally wants to add to her collection of seashells. She currently has 100 seashells.
    11·2 answers
  • Can someone help out I’m really slow at this and don’t understand it please:)
    15·1 answer
  • Jane moved from a house with 72 square feet of closet space to an apartment with 44.64 square feet of closet space. What is the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!