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4 years ago

Can anyone please solve this ,I really need it

Mathematics

1 answer:

Pachacha [2.7K]4 years ago

8 0

Answer:

This is the flyer...

Step-by-step explanation:

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) Thirty percent of the students in a management class are graduate students. A random sample of 3 students is selected. a) Usin

adell [148]

Given Information:

Probability of success = 30%

Sample size = n = 3

Variable of interest = x = 2

Required Information:

Probability of exactly 2 graduates = ?

Answer:

Probability of exactly 2 graduates = P(2; 3, 0.30) = 0.189

Step-by-step explanation:

The given problem can be modeled as a binomial experiment since a random selected student can either b graduate or not therefore, there are only 2 outcomes. Each trial is independent and the probability of success is not changing from trial to trial. The number of trials in also fixed.

We know that a binomial distribution is given by

P(x; n, p) = nCx pˣ (1 - p)ⁿ⁻ˣ

Where p is the probability of success and 1 - p is the probability of failure, n is number of independent trials and x is the variable of interest.

For the given problem, we know that x = 2, n = 3 and p = 0.30

P(2; 3, 0.30) = 3C2*0.30²*(1 - 0.30)³⁻²

P(2; 3, 0.30) = 3*0.30²*(0.70)¹

P(2; 3, 0.30) = 0.189

3 0

4 years ago

Margaret's car loan statement said she would pay $7,683.20 in a simple interest for a 5 year loan at 9.8% how much did Margaret

Kobotan [32]

Answer:15,680

Step-by-step explanation:

7,683.207,683.20=(P)(0.098)(5)=0.49P

Dividing both sides by 0.49, we have

P=7,683.200.49=15,680

7 0

3 years ago

Cynthia drove 288 miles in 4 1/2 hours. What was her speed in miles per hour?

a_sh-v [17]

4*1/2=2
288/2
144
her speed was 144 miles per hour

8 0

3 years ago

20\100 equivalent to 1\5<br> 5\8 equivalent to 9\10

Scilla [17]

20/100 is equivalent to 1/5.

Just divide by 20 on the top and bottom. (20/20)/(100/20)=1/5.

4 0

4 years ago

1/15.999=x/54.5<br> Does anyone know what to do? I keep getting the answer wrong.

kkurt [141]

Hello!

First, let's write the problem.
$\frac{1}{15.999}=\frac{x}{54.5}$
Let's switch sides now, otherwise, we are going to end up doing it later.
$\frac{x}{54.5}=\frac{1}{15.999}$
Multiply both sides by 54.5.
$\frac{x}{54.5} *54.5 =\frac{1}{15.999}*54.5$
We could also rewrite that as,
$\frac{54.5x}{54.5}=\frac{1\cdot \:54.5}{15.999}$
Simplify.
$\frac{54.5x}{54.5}=x$
$\frac{1\cdot \:54.5}{15.999}=\frac{54.5}{15.999}$
$x=3.40646\dots$
That would be our final answer, we could round it to.
x ≈ 3.40

You can feel free to let me know if you have any questions regarding this!
Thanks!

- TetraFish

8 0

3 years ago

Read 2 more answers