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
lorasvet [3.4K]
3 years ago
6

A college wants 950 entering freshman. Experience shows that about 75% of admitted students accept. The college admits 1200 stud

ents, so if we assume decisions to enroll are made independently, the number who accept has a B(1200,0.75) distribution. What is the standard deviation of the number of students who choose to enroll
Mathematics
1 answer:
trapecia [35]3 years ago
7 0

Given Information:

Probability of success = p = 75 %

Total number of students = n = 1200

Required Information:

Standard deviation = σ = ?

Answer:

Standard deviation = 15

Step-by-step explanation:

In a binomial distribution, the probability of success does not change from trial to trial and the probability of events in not dependent on each other. Also the number of trials are fixed. So this problem can be modeled using binomial distribution.

The mean of the number of students who choose to enroll is given by

μ = n*p = 1200*0.75

μ = 900

The standard deviation of the number of students who choose to enroll is given by

σ = √np(1 - p)

σ = √1200*0.75(1 - 0.75)

σ =  15

Therefore, the standard deviation of the number of students who choose to enroll is 15.

You might be interested in
Greg's grocery store placed an order for yogurt. The store ordered 1,020 cartons of yogurt. Each carton ordered was blueberry, P
marin [14]

Answer:

  544

Step-by-step explanation:

The ratios of cartons are ...

  B : P = 2 : 1

  S : L = 2 : 1

  L : B = 2 : 1

Combining these into a single set of ratios, we have ...

  S : L : B : P = 8 : 4 : 2 : 1

Then the proportion of the order that is strawberry is ...

  8/(8+4+2+1) = 8/15

and the number of strawberry cartons is ...

  (8/15)·1020 = 544

The store ordered 544 cartons of strawberry yogurt.

4 0
3 years ago
Jayla bought 3 blouses at 15 dollars each the blouses were 18 percent off how much did Jayla pay in total
Feliz [49]
Jayla payed $36.90 i got this because i multiplied 3 times 15 and got 45 then i did .18 times 45 which is 8.1 (8.1 is how much will be taken off) and then i subtracted 45-8.1 and got $36.90
8 0
3 years ago
Use inverse operations to solve the equation. -5x=65
kicyunya [14]
Divide both sides by -5 to get x= -13
7 0
3 years ago
Read 2 more answers
Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))
Marrrta [24]

Answer:

\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}

Step-by-step explanation:

\frac{\frac{1}{c}+\frac{1}{h}}{\frac{1}{c^2}-\frac{1}{r^2}}

Combine \frac{1}{c} + \frac{1}{h}

\frac{\frac{h+c}{ch}}{\frac{1}{c^2}-\frac{1}{r^2}}

Combine the bottom, too.

=\frac{\frac{h+c}{ch}}{\frac{r^2-c^2}{c^2r^2}}

Apply the fraction rule

=\frac{\left(h+c\right)c^2r^2}{ch\left(r^2-c^2\right)}

Cancel

=\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}

Therefore, \frac{\left(\frac{1}{c}+\frac{1}{h}\right)}{\left(\frac{1}{\left(c^2\right)}-\frac{1}{\left(r^2\right)}\right)}:\quad \frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}

5 0
2 years ago
If y varies directly as the square root of x and y=12 when x = 16 , find x when y = 15
a_sh-v [17]
= 19 this is the answer I'm guessing since 16-12= 4 so 16 is 4 more than 12
3 0
3 years ago
Other questions:
  • Least to greatest 5/6, 7/12, 3/4
    10·2 answers
  • Four friends go out to dinner and decide to split the bill Evenly. Each friend orders a soda for $2.00 an entree for $12.99 and
    12·2 answers
  • Please help me need help ASAP don’t know how to solve
    7·1 answer
  • The LSU tigers won the 2019 Football National Championship. Joe Burrow threw for 60 touchdowns in the 15-game season. What is th
    15·2 answers
  • Simplify 5c + 5c + 6c
    6·2 answers
  • Complete the two-way frequency table below, which shows the relationship between adults' gender and whether these adults buy a c
    9·1 answer
  • A 12 foot ladder is placed 3 feet from a house and leaned against the house. At what height does the ladder touch the house?
    9·1 answer
  • He charges $15 per hour to mow lawns and $20 per hour for gardening.
    13·1 answer
  • 2. Find the missing angle x.<br> 155°<br> 60°<br> X
    9·1 answer
  • You are the senior class president and are selling items for a school fundraiser. You have cell phone cases and t-shirts that ha
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!