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
True [87]
3 years ago
7

You pay .50 cent to draw a card from a deck. if you draw an ace you win ten dollars if you draw a face card(12 in a deck) you wi

n a $1. what is your expected value
Mathematics
1 answer:
sveticcg [70]3 years ago
5 0
The probability that a face card can be drawn from a standard deck of cards is 12/52 which can be simplified into 3/13.

The expected value is the product of the probability and the value.
                       Expected value = (3/13)($1) = $0.23
The difference between the amount spent and the expected value is equal to $0.27.
You might be interested in
Fractions order from least to greatest<br> Which is the right answer? Pls help ill give brainliest!!
olya-2409 [2.1K]

Answer:

2/5, 4/7, 5/2

Step-by-step explanation:

5/2=2.5     2/5=.40    4/7= .59 that's aproximately  for 4/7

8 0
3 years ago
Can you help me with this?
amid [387]
The answer is 1:60 no it’s wrong
4 0
3 years ago
The grades of a statistics midterm are normally distributed with a mean of 70 and a standard deviation of 2. Without using a cal
butalik [34]

Answer:

.13.5%

Step-by-step explanation:

The probability that a student will receive a grade between 74 and 76 is calculated as follows:

µ+2σ=70+2(2)=70+4=74

µ+3σ=70+3(2)=70+6=76

From the above empirical rule it can be observed that 13.5% of observations fall in between 1 and 2 standard deviations above the mean.

Therefore, the probability that a student will receive a grade between 74 and 76 is 13.5%.

Thus, the correct options is A.13.5%.

5 0
3 years ago
PLEASE HELP!!! 40 POINTS OFFERED!!
Andre45 [30]

I could help you but please send me directions!

4 0
3 years ago
I don't understand how to find a. Please help!
Rama09 [41]
The small right angled triangle with hypotenuse vale 5 is similar to the big triangle with b as the hypotenuse
Corresponding sides are in the same ratio so we can write 
a/12 = 5/b.....(1)

Also  applying pythagoras theorem to the large triangle 
b^2 = 5^2 + 12^2
b^2 = 169
b = 13

So substituting in equation (1):-
a  / 12 = 5  / 13
a = (5*12 ) / 13

8 0
3 years ago
Read 2 more answers
Other questions:
  • The quotient of j and 8" can be expressed as:
    7·1 answer
  • How to solve 7r^2-41r-6=0 basics step by step
    14·2 answers
  • Reduce 2/8 to the smallest form and 3/12 to the smallest form
    11·1 answer
  • છે કે.what does x equal​
    10·1 answer
  • it is 240 miles from boston to new york. If i drive at a speed of 50mph, how long will it take me to reach new york? how much mo
    14·2 answers
  • The vertices of AMNO are M (1,3), N (4,9), and O (7,3). The vertices of APQR are P (3,0), Q (4,2), and R (5,0) Which conclusion
    13·1 answer
  • Pls Helpp meee Which one is it??? I will give u brainliest
    8·1 answer
  • -2/3 + 3/9 help me please
    6·2 answers
  • A bike wheel is 26 inches in diameter. What is the bike
    15·1 answer
  • What is the solution to 2.1(2.3 + 2.1x)<br> = 11.65 + x?<br> A . 4.5<br> B . 1.5<br> C . 3<br> D . 2
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!