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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.
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A binomial distribution
Alina [70]

Answer:

0.324

Step-by-step explanation:

Given that :

Success rate = 30%

p = 30% = 0.3

q = 1 - p = 1 - 0.3 = 0.7

Number of trials, n = 6

Probability of having exactly 2 successes ; x = 2

P(x = 2)

Usibgbtge binomial probability relation :

P(x = x) = nCx * p^x * q^(n-x)

P(x = 2) = 6C2 * 0.3^2 * 0.7^4

P(x = 2) = 15 * 0.3^2 * 0.7^4

P(x = 2). = 0.324135

P(x = 2) = 0.324

3 0
3 years ago
What is -17 mod 8 I’m confused at the moment
alukav5142 [94]

Answer:

-136

Step-by-step explanation:

Given :

-17(|8|)

Mod of positive number is positive

So, |8|=8

-17(8)

=-136

Therefore,-17 mod 8 is -136

4 0
3 years ago
Micah is thinking of a 2-digit number. It is a multiple of 6 and 12. It is a factor of 108. The sum of its digits is 9. What num
Anna007 [38]
So we need to find the common multiples of 6 and 12. Which are basically the multiples of 12, since 6 is always divisible to 12. So (12, 24, 36, 48, 60, 72, 84, 96, 108) Since it is a factor of 108, we stop at 108 (since a number greater than 108 can't be a factor of 108)

Now we find the factors of 108
108=<span>1,2,3,4,6,9,12,18,27,36,54,108

The numbers in both lists are 36 and 108 but since Micah is thinking of a 2-digit number, the number she is thinking of is 36.</span>
3 0
3 years ago
I will show you the qustion
Nutka1998 [239]

Question:

Solution:

The solution to a system of linear equations is where the graphs of each linear equation intersect. In this case, we can see that the lines intersect at the point:

(-3,2)

thus, the correct answer is (-3,2).

3 0
1 year ago
How i describe the algebraic expression of n+4
pickupchik [31]

Answer:

Step-by-step explanation:

One way to put that into words would be "4 added to some number".  Another way could be "the sum of some number and 4" or "4 more than some number".  They all mean the same thing.

6 0
3 years ago
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