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
Lunna [17]
3 years ago
10

A university knows from historical data that 25% of students in an introductory statistics class withdraw before completing the

class. Assume that 16 students have registered for the course. What is the probability that exactly 2 will withdraw?
Mathematics
1 answer:
Vikki [24]3 years ago
8 0

Answer:

13.4%

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1-p).

Here, n = 16, r = 2, p = 0.25, and q = 0.75.

P = ₁₆C₂ (0.25)² (0.75)¹⁶⁻²

P = 120 (0.25)² (0.75)¹⁴

P = 0.134

There is a 13.4% probability that exactly 2 students will withdraw.

You might be interested in
Suppose that taxis in New York are driven an average of 60,000 miles per year with a standard deviation of 11,000 miles. Assume
Gre4nikov [31]
<span>Let n be the number of taxis in NY. The average distance travelled is 60,000 miles, therefore the middle 95% will have the same average as the population, the reason being the mileage is symmetrically distributed about the mean Therefore the total number of miles in one year for the middle 95% is 60,000 * 0.95 * n
</span><span>The range of miles driven by the middle 95% can be found from the empirical rule that says: For a normal distribution, approximately 95% of the data points lie within the range plus and minus 2 standard deviations of the population mean. In this case the range is (60,000-22,000) to (60,000 + 22,000)</span>
3 0
3 years ago
Solve the equation. Check your solution.<br> 3x+4x-8=6<br> x= <br> ​(Simplify your​ answer.)
KengaRu [80]

Answer:

<h2>x=2</h2>

Step-by-step explanation:

Isolate x

3x + 4x - 8 = 6

             +8    +8

3x + 4x = 6 + 8

Simplify

3x + 4x = 6 + 8

7x = 14

Divide both sides by 7

7x/7 = 14/7

x = 2

6 0
3 years ago
Name the postulate or theorem you can use to prove TKS=TLR
OlgaM077 [116]

Answer:

ASA postulate

Step-by-step explanation:

To prove two triangles are congruent, you need 3 congruent parts in one of the patterns ASA, AAS, SSS, or SAS. Place your pencil on one vertex of the triangle then trace the figure. As you come to each congruent part, write either A for angle or S for side depending on what the part is. After doing so, you will see the pattern A - S - A since a side is congruent between two angles.

8 0
3 years ago
I need help ASAP 30 points+brainleist
yulyashka [42]

Answer:

A) 40 feet.

B) 7 inches.

Step-by-step explanation:

A) To acquire 8 inches, multiply the corresponding scale factor by 8:

1 inch equals 5 feet; 8 inches equals 40 feet

The genuine house stands 40 feet tall.

B) You can write the percentage if you want...

dwg / (35 feet) = 1 in / (5 ft)

When you multiply by 35 feet, you get...

7 in dwg = (1 in)(35 ft)/(5 ft)

In the scale drawing, the home measures <em>7 inches in length</em>.

5 0
2 years ago
Read 2 more answers
a larger gear wheel has 40 teeth and a small gear wheel has 25 teeth. if the larger one makes 100 revolutions in a minute, how m
nevsk [136]
Lets calculate gear ration T2/T1
so the gear ratio will be 1.6 it simply means dat if u rotate large gears one full revolution it tends to turn another short wheel to 1.6 revs, so in ur qtion the large whell revs 100 den u must multiply wid 1.6*100= 160 revs

5 0
3 years ago
Other questions:
  • 8×10 to the six power divided by 4×10 to the third power
    6·1 answer
  • The graph of y=sin(x-3π/2) is the graph of the y=sin(x) shifted in which direction​
    7·1 answer
  • Can someone help with my math question
    8·1 answer
  • What’s the equation of the a line that passes through the point ,0-1and(2,3)?
    9·1 answer
  • Find the slope, if it exists, of the line containing the points (3,-1) and (3, -6).
    14·1 answer
  • A and B represent whole numbers, and A▯B means A² + B² - 2AB. What is the value of 9▯(5▯2)?
    9·1 answer
  • Which expression is equivalent to 27 ( − 2 3 x + 1 3 ) − 5 x ?
    10·1 answer
  • 4. Three hoses are connected end to end. The first hose is
    15·1 answer
  • ANSWER QUICKLY! HURRY.
    10·1 answer
  • Find the height in feet of the missile after 5 seconds in the air
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!