Ask question

Ask question

All categories

VladimirAG [237]

3 years ago

12

A bag has 4 yellow marbles and 16 blue marbles. half of the blue marbles are made of plastic. a marble is selected at random fro

m the bag. what is the probability that it is a blue, plastic marble?

1 answer:

lyudmila [28]3 years ago

8 0

Total marble:20
blue plastic marble:8
8/20
4/10
40% chance you're getting blue, plastic marble

You might be interested in

Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a s

Aliun [14]

Answer : 0.0129

Step-by-step explanation:

Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is $\mu=13.4$ years and standard deviation is $\sigma=1.7$ years.

Sample size : $n=40$

Let X be the random variable that represents the age of fleets.

We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.

For z-score,

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x=14

$z=\dfrac{14-13.4}{\dfrac{1.7}{\sqrt{40}}}\approx2.23$

By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-

$P(x\geq 14)=P(z\geq2.23)\\\\=1-P(z$

Hence, the required probability = 0.0129

6 0

3 years ago

In Ms. Jordan's math class,

vovangra [49]

Answer:

there are 27 female

Step-by-step explanation:

3 0

3 years ago

What is the square root of 9800 in simplest radical form?

Mumz [18]

The square root of 9800=

= 70 * square root of 2

4 0

3 years ago

Which equation has a graph that is a parabola with a vertex at (5, 3)?

Dominik [7]

Answer:

It is "A" or in other words the one that says (x-5)2+3 because when you graph it you can see it is the only one touching that point!

Step-by-step explanation:

7 0

3 years ago

Whats the area of the shape?

Karolina [17]

I could be wrong but i think it’s 32

7 0

2 years ago

Read 2 more answers