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
dimulka [17.4K]
3 years ago
7

Suppose there are three balls in a box. On one of the balls is the number 1, on another is the number 2, and on the third is the

number 3. You select two balls at random and without replacement from the box and note the two numbers observed. The sample space S consists of the three equally likely outcomes ((1,2), (1,3), (2,3)) (disregarding order). Let X be the sum of the two balls selected. (a) What is the distribution for X? (b) What is the probability that the sum is at least 4? (c) What is the mean of X?
Mathematics
1 answer:
quester [9]3 years ago
8 0

Step-by-step explanation:

a) X is a discrete uniform distribution. As the number of outcomes is only 3.

b) sum is at least 4

X ≥ 4

i.e  (1,3) or (2,3)

probability of X ≥ 4 is 2/3

2/3= 0.667

66.7 % is the probability of the outcome to have  a sum at least 4.

c) The 3 likely outcome of X

<em>(1,2) where X ; </em> 1+2=3

<em>(1,3) where X ;</em> 1+3=4

<em>(2,3) where X ;</em>  2+3=5

Mean = 3+4+5/ 3

Mean = 4

Feel free to ask any uncleared step

You might be interested in
Peter expected to earn $425 in a week. In fact, he earned $500. What was the percentage error? (Round to nearest percent)
Gwar [14]

Answer:

Pretty sure it would be 15 percent sorry if im wrong

Step-by-step explanation:

7 0
2 years ago
Mark can make 42 birdays cakes in 7 days how many birthday cakes can mark make in 5 days?
iragen [17]
42 cakes in 7 days, that's 42/7= 6 cakes per day
6*5=30
8 0
3 years ago
Read 2 more answers
two points are given (-1,-4) and (-3,6) use the coordinates of the two points to set up the equation for rate of change the solv
lisabon 2012 [21]
The formula to find the rate of change is y2-y1/x2-x1
6-(-4)/-3-(-1)
=10/-2
=-5
4 0
3 years ago
0.54 divide 0.03 please Help <br>D:
Helga [31]
It would be 18 I'm sure
4 0
2 years ago
Read 2 more answers
Which quadrilateral below could have four different side lengths?
makvit [3.9K]

Answer:

c. trapezoid

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Please find the volume + round to two decimal places. Thanks! :)
    8·1 answer
  • Two different lines are parallel if their slopes are____.
    9·1 answer
  • What kinds of error types are indicated by a red circle with an exclamation point (”!”) in the summary grid?
    15·1 answer
  • On the class field trip, there were 4 teachers and 35 students. What is the ratio of students to teachers on this trip?
    9·1 answer
  • 4. A store is displaying boxes of a new video game in 7 rows. If the store has 49 copies of the game, how many games are in each
    12·2 answers
  • HELP PLEASE For this distribution, which statement is MOST LIKELY to be true? A) The mean is lower than the median. B) The mean
    11·1 answer
  • 2.4 times (-8.3) how much would it equal
    9·2 answers
  • Eight rooms in a house need to be painted.<br>Each room can be painted white or<br>yellow.​
    6·1 answer
  • 10.) 1 and 2 in this diagram are___
    6·1 answer
  • Diego works at a carwash and makes $11 per hour. If he works 9 hours of overtime in a week, how much overtime would he earn? Con
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!