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
FromTheMoon [43]
3 years ago
13

While playing Monopoly, Robin estimated the probabilities of the non-zero rents according to the following probability distribut

ion:
x $2 $14 $20 $100
P(x) 0.40 0.20 0.20 0.20

Consider the random variable x = dollar amount in rent in a Monopoly roll.

a. If the table above specifies the probability distribution f(x), what is the mean of the random variable x?
b. If the probabilities are associated with the outcomes as in the table above, what is the standard deviation of the random variable x?
Mathematics
1 answer:
azamat3 years ago
5 0

Answer:

Step-by-step explanation:

Given the data table :

x : __ $2_ $14_ _$20 __ $100

P(x) : 0.40_ 0.20 _0.20 _0.20

The mean :

E(x) = Σ(x*p(x))

E(x) = (2*0.4) + (14*0.2) + (20*0.2) + (100*0.2)

E(x) = 27.6

The standard deviation :

SD(x) = sqrt(Σ(x² * p(x)) - E(x)²)

Σ(x² * p(x)) - E(x)² :

((2^2*0.4) + (14^2*0.2) + (20^2*0.2) + (100^2*0.2)) - 27.6^2

2120.8 - 761.76

= 1359.04

Sqrt(1359.04)

SD(x) = 36.865159

SD(x) = 36.87

You might be interested in
An entire pumkin pie (16 Slices ) has 3,840 calories. If the pie is cut into 16 slices how many calories are in each slice?
Nookie1986 [14]

Answer:

240

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Cuánto es 7 octavos más un medio
Mariulka [41]
The answer is <span>1.375 or 1 3/8</span>
8 0
4 years ago
Read 2 more answers
Hii please help asap ill give brainliest thanks
densk [106]

Answer:

C. The teachings of Buddha

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If 3x+8=3x+8 is it one solution or no solution
Nadusha1986 [10]

Answer:

infinite solutions

Step-by-step explanation:

3x+8=3x+8

Subtract 3x from each side

3x-3x+8=3x-3x+8

8=8

Since this is always true, we have infinite solutions


4 0
3 years ago
PLEASE HELP WITH MATH AND BEST GETS BRAINLIEST AND PLEASE SHOW ALL WORK.
Alex777 [14]
Angle 1 + angle 6 is equal to 180° because they are on the same line.
so if angle 6 is 125° so angle 1 is:
180 - 125 = 55° :)))
i hope this is helpful
have a nice day 
7 0
3 years ago
Read 2 more answers
Other questions:
  • There are 5 cups of oatmeal in a container. Jessica eats 1/3 cup of the oatmeal every day for breakfast. In how many days will J
    14·2 answers
  • MARKING BRAINLIEST AND GIVING UP TO 100 POINTS FOR BEST ANSWER!!! ALL OTHERS WILL BE DELETED IF IT IS A SCAM!!!
    9·2 answers
  • Marjorie evaluated the expression 8x + 9 for x = 6 as shown:
    7·1 answer
  • I need help urgently
    13·1 answer
  • I really need help somebody help
    5·2 answers
  • Calculating a Data Value from a Percentile
    11·2 answers
  • Esme plays a game.
    10·1 answer
  • What is the answer to 7b-7-8b= -15
    15·2 answers
  • Someone help me pls
    5·1 answer
  • Help me I will give brainliest
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!