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Zina [86]
3 years ago
13

Consider the probability distribution of a random variable x. is the expected value of the distribution necessarily one of the p

ossible values of x?
Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0
The expected value of a distribution is considered as a mean, or average, for a probability distribution. It represents the center of the possible values of a variable. That doesn't necessarily mean it would be one of the possible values of x. 
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Three balls are selected at random without replacement from an urn containing two white balls and four blue balls. Find the prob
guapka [62]

<u>Answer:</u>

P(3 blue) = 1/5

<u>Steps:</u>

P(3 blue) = 2/3 × 3/5 × 1/2

P(3 blue) = 6/30

P(3 blue) = 1/5

<em>that's 20%</em>

4 0
2 years ago
Ethan has 3/4 of a box of cereal. He gives 1/8 of the box to his little brother and Ethan eats 1/4 of the box, himself. What fra
riadik2000 [5.3K]

Answer:

<em>3/8 of the box cereal</em>

Step-by-step explanation: First you must convert 3/4, 1/8, and 1/4 so they have to same denominator. Four can go into eight two times, so you must multiply the numerator by two. So your new fractions are 6/8, 1/8, and 2/8. Now you must subtract 1/8 and 2/8 from 6/8. When you subtract 1/8 from 6/8 you get 5/8. Now subtract 2/8 from 5/8 and you get <em>3/8. </em>That is how you get the answer, I hope this helps you.


5 0
2 years ago
Find the sum of the arithmetic sequence.<br><br>-10, -7, -4, -1, 2, 5, 8​
Tema [17]

Answer:

-7

Step-by-step explanation:

3 0
2 years ago
Connor edits 34 <br> pages in 8 hours. Complete the table using equivalent ratios
makkiz [27]

If Connor edits 34 pages in 8 hours. Using the equivalent ratios, the table has been completed.

The equivalent ratios are the ratios that has same value when we compare them. We can check two or more ratios and check whether they are equivalent or not.

Connor edits 34 pages in 8 hours

Number of pages he edits in 8 hours = 34 pages

Number of pages he edits in 1 hour = 34/8 = 17/4 pages

Number of pages he edits in 12 hours = (17/4)×12

= 51 pages

Complete the table

Hence, if Connor edits 34 pages in 8 hours, using the equivalent ratios, the table has been completed

Learn more about equivalent ratio here

brainly.com/question/13513438

#SPJ1

3 0
9 months ago
The length of a rectangle is 12 inches. The width of the rectangle is 5 inches. Mia says the perimeter is 60 in2 and the area is
larisa86 [58]

Answer:

Mia is incorrect.

Step-by-step explanation:

She confused the area and perimeter.

Area is length x width, in this case 12 x 5 = 60

Perimeter is length² × width², and in this case, it is 12² × 5² = 34

Area = 60 inches

Perimeter = 34 inches

Hope that helps and have a great day!

3 0
3 years ago
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