A roulette wheel consists of 18 red slots, 18 black slots, and 2 green slots. A player can wager $1 that a marble will land in a red slot, in which case the player would gain a $1. If the marble lands in a slot that isn't red, then the player loses their $1 wager. Let X represent the player's gain from a random $1 wager on red. Here's the probability distribution of X along with summary statistics:
Lose Win
X = gain (S) -1 1
Р(X) 20/38 18/38
Мean: Ax-$0.05
Standard deviation: ax$1.00
Suppose a player decides to wager $5 instead of winning $5.
Let Z represent the player's gain from a random $5 wager on red. possible outcomes become either losing or , so
What are the mean and standard deviation of Z? dollars?

Answers

Answer 1

Answer:

-$0.26 ; $5

Step-by-step explanation:

Given that :

____________ Lose ______ Win

X =$1 _______ - $1 ________ $1

P(X) _______20/ 38 _____ 18/38

Mean, Ux = - $0.05

Standard deviation, σx = $1.00

If the wager is $5 instead of $1

Mean = Σx*p(x)

Mean = (-5 * 20/38) + (5 * 18/38)

Mean = - 2.6315789 + 2.3684210

Mean (μ) = −0.26

Standard deviation :

Sqrt(Σx²p(x) - μ²)

[(-5^2)*(20/38) + (5^2)*(18/38)] - (-0.26^2)

(13.157894 + 11.842105) - 0.0676

= 24.999999 - 0.0676

= sqrt(24.932399)

= 4.9932353

= 5

A Roulette Wheel Consists Of 18 Red Slots, 18 Black Slots, And 2 Green Slots. A Player Can Wager $1 That

Related Questions

Solve |-x + 4 | = | 2x - 2| by graphing
P/s: if possible show me how to do it T-T

Answers

I always like to start by removing the absolute value signs. Solving the two equations, -x+4 = 2x-2 we get 6 = 3x, x = 2
If we test ±2 we get the following:
x = 2; | -(2) + 4 | = | 2(2) - 2 |, | 2 | = | 2 |, 2 = 2
Now we test
X = -2; | -(-2) + 4 | = | 2(-2) - 2 |, | 6 | = | -6 |, 6 = 6
Both +2 and -2 work.

I need some help with this

Answers

Answer:

8

Step-by-step explanation:

Plsss help!!!

Evaluate for C when F =77º

C = 5/9 (F – 32)

A. 25
B. 45
C. 60
D. 80

Answers

Answer:

A. 25°C

Step-by-step explanation:

C=5/9(77-32)

C=5/9(45)

C=25°C

Convert 77 °F to °C

To convert from Celsius to Fahrenheit. We apply the following formula:

[tex]\bf{^{\circ}C= \dfrac{5}{9}(^{\circ}F-32) \ \longmapsto \ Formula }[/tex]

We substitute the number 77 where the Fahrenheit degrees are, and we are left with the following form.

[tex]\bf{^{\circ}C= \dfrac{5}{9}(77-32) \ \longmapsto \ \ Subtract \ 32 \ from \ 77. }[/tex]

[tex]\bf{^{\circ}C= \dfrac{5}{9}\times45 \ \longmapsto \ \ Multiply \ 5*45, divide \ by \ 9 }[/tex]

[tex]\bf{^{\circ}C=25}[/tex]

So 77 Fahrenheit, on the Celsius scale is 25.So the correct alternative is option "A".

How can you find the missing angle measurement of a triangle if you know the measurement of the other 2 angles using an equation

Answers

hello

Step-by-step explanation:

180 - (sum of known angles) = missing angle

you can substitute the values

angles in a triangle add up to 180

Which statement about the reflection below is true?

Answers

Answer:

Can you show us the statements?

Step-by-step explanation:

what are the statements

A circle has an approximate circumference of 15.7 ft. and a radius of 2.5 ft. Based on this
circle, which ratio is equivalent to the value of ?

Answers

Answer:

C

Step-by-step explanation:

[tex]\pi = 3.14[/tex]

15.7/5=3.14

Solve for x.
5
10
12
13

Answers

Answer: B)  4 & 1/6

Nice work on getting the correct answer.

============================================================

Explanation:

x is opposite the marked acute angle

5 is opposite the corresponding acute angle

So x and 5 are proportional to each other. We can form the ratio x/5

Similarly, 10 and 12 are proportional to one another. We can form the ratio 10/12.

Set those ratios equal to each other and solve for x

x/5 = 10/12

12x = 5*10 ... cross multiply

12x = 50

x = 50/12 ...... divide both sides by 12

x = (25*2)/(6*2)

x = 25/6

x = (24+1)/6

x = 24/6 + 1/6

x = 4 + 1/6

x = 4 & 1/6 which shows why choice B is the answer.

Side note: 25/6 = 4.167 approximately

correct answer is b

sofia and two of her friends are going to share one-fourth of a pizza. How much will each person get? I need some help

Answers

Answer:

83/100

Step-by-step explanation:

Calculate the value of this expressions.Give your answer as a mixed number
2 1/5 ÷(2 2/3 - 3/4)​

Answers

Answer:

132/115

= 1 17/115

hope this helps

You know the two legs of a right triangle. You also know the measure of one of the acute angles of the triangle. Could you use the given law or theorem to find the length of the hypotenuse? Select Yes or No for A-C.

A. Law of Sines (YES OR NO )

B. Law of Cosines (YES OR NO )

C. Pythagorean Theorem (YES OR NO )

Answers

Answer:

A (NO)      B(YES)    C(YES)

Step-by-step explanation:

Law of sines is used to find the measurements of angles not sides. Law of cosines is used for the sides. And pythagorean theorum should be obvious as it is based on the sides of a right triangle.

what fraction is 15 minutes of 1 hour​

Answers

Answer:

1/4

Step-by-step explanation:

Convert 1 hour to minutes

1 hour = 60 minutes

Then you can find the fraction

15/60

simplifies to 1/4

15 minutes is 1/4 of 60 minutes/1 hour

‼️DIMENSIONAL ANALYSIS‼️

‼️ASAP!!! BRAINLIEST!!‼️
PLS HELP!!! SHOW ALL WORK +STEPS!! Thx!

Answers

Well there’s 24 hours in a rotation.. and one rotation is approximately 40075km

40075km to miles is 24901.451 miles

And we need miles per hour

So divide 24901.451 by 24

= 1037.56 mph (rounded to nearest tenth)

Find the area of the triangle using Pythagorean theorem

Answers

Answer:

48

Step-by-step explanation:

Remark

Use a^2 + b^2 = c^2 to solve for the height.

Givens

c = 10

b = 6

h = ?

Solution

b^2 + h^2 = c^2

6^2 + h^2 = 10^2

36 + h^2 = 100            Subtract 36

h^2 = 100 - 36

h^2 = 64                      Take the square root of both sides

sqrt(h^2) = sqrt(64)

h = 8

The height = 8

Area = 1/2 * b * h

Area = 1/2 *12 * 8

Area = 48

Comment

You might wonder where the 12 came from. It wasn't given The base is the whole line across the bottom. 1/2 of it is six. The whole base = 12

A circular garden has a diameter of 8 yards. What is the area of the garden?
Use 3.14 for TT.
O A. 12,56 yd
O B. 200.96 yd2
O c. 25.12 yd?
O D. 50.24 yd?

Answers

The answer would be D
Answer: D. 50.24 yd


Convert these improper fractions into mixed numbers.
5/4

Answers

Answer:

1 1/4

Step-by-step explanation:

4/4 + 1/4 = 5/4

4/4 = 1

so 1 1/4

Answer: 1  1/4

Step-by-step explanation: first we have to find the whole number then we divide the numerator and the denominator. then we are only interested in the whole numbers so we ignore the one to the right of the decimal. then we will used the whole number we calculated in step one and multiply it by the original denominator then is subtracted from original numerator. our next step is to simplify.  then when that down we need to calculate the greatest common factor.

Please answer this also I need help

Answers

Answer: 2/2

Step-by-step explanation:

6 x 2/2 =6

si en una canasta saben 30 limones ¿ Cuantos canastas nesesitamos para guardar 75 ? inversa ​

Answers

Answer:

3

Step-by-step explanation:

¡¡espero que esto ayude!!

if you need extra points (50 points) and brainiest answer this correctly plz

Answers

Answer:

D) 500 square feet

Step-by-step explanation:

20x40=800

30x10=300

800-300=500

Answer:

500 square feet

Step-by-step explanation:

Walk way A=bh

A=40 times 20

A=800

garden

A=30 times 10

A=300

Now subtract walkway from the garden. 800 - 300= 500

what is X please help 5x - 13.75 = 20

Answers

Answer:

X= 1.25

13.75 + 5= 18.75

20 - 18.75= 1.25 OR 1.25 + 18.75 = 20

Step-by-step explanation:

С
15 cm
X cm
A
8 cm
B.

Answers

Answer:

17

Step-by-step explanation:

This is Pythagorean Theorem. AB is the "a" side, BC is the "b" side, and the x (or AC) is the hypotenuse. In Pythagorean Theorem, a^2 + b^2 = c^2  is used to find the hypotenuse, or in this case, segment AC. We find this by doing 8^2 + 15^2 which gives us 289. We then take the square of that which is 17 to find the hypotenuse, or the length of line segment AC

Brainliest pls

Using the digits 1 to 5 , Atmos one time, placed a digit in each box to create an expression which is the largest possible value.

Answers

Answer:

4^5+2x3

Step-by-step explanation:

4^5+2x3

What is the perimeter of the figure?
O 34 m
O 44 m
O 62 m
0 72 in

Answers

Answer:

62  m

Step-by-step explanation:

The answer is 62 because u add the sides and that’s what u get

PLASE HELP ASAP!!! ILL MARK THE BEST ONE BRAINLYEST

Answers

Answer:

1,f

2,t

the last one just use photo math

Step-by-step explanation:

anime recommendations

Answers

Answer:

what genre babe‍♀️

Answer:

It depends on a lot what kind you like and if u have watched a lot

the promised Neverland

Black Clover

Aot

HxH

Monster

Code grass

The classroom of the elite

Psycho pass season 1 only

COMEDY

The disastrous life of saiki k

Kaguya sama love is war

What is equivalent to -8z+ (-3.5) +1.5z+3y-5.5

Answers

Answer: =3y−6.5z−9

Step-by-step explanation:

4. A map has a scale factor of 1 cm = 15 miles
a. What is the distance (real life) if two cities are 2.5 cm apart on the map?

can anyone help please ?​

Answers

37.5 cm
Cause in 2 cm you get 30 miles and then you add 7.5 so 37.5cm

Question 4
2 pts
At noon, a barista notices that she has $30 in her tip jar. If she makes an average of $0.45
from each customer, how much will she have in her tip jar if she serves n customers during
her shift?
(equation)
How much will she make if she serves 134 customers?
How many customers did she serve by noon?

Answers

Answer:

a [tex]A = 30 + 0.45 n[/tex]

b [tex]A = 90.3[/tex]

c 0 customers

Step-by-step explanation:

Given

[tex]Base\ Amount = 30[/tex]

[tex]Rate = 0.45[/tex] per customer

Solving (a): Amount (A) on n customers

This is calculated as:

[tex]A = Base\ Amount + Rate * n[/tex]

[tex]A = 30 + 0.45 * n[/tex]

[tex]A = 30 + 0.45 n[/tex]

Solving (b): Amount on 134 customers

In this case: n = 134

So:

[tex]A = 30 + 0.45 * 134[/tex]

[tex]A = 30 + 60.3[/tex]

[tex]A = 90.3[/tex]

Solving (c): Customers at noon.

At noon, the amount is 30.

So:

[tex]A = 30 + 0.45 n[/tex]

[tex]30 = 30 + 0.45n[/tex]

Collect like terms

[tex]0.45n = 30 - 30[/tex]

[tex]0.45n =0[/tex]

[tex]n = 0[/tex]

PLEASE HELP!
Dean owes $14 on his credit card. He subtract five dollars from his credit card debt by making a payment. Dean
writes this subtraction equation to represent what he owes now. how much money does Dean owe now?
-14 - (-5)=?

answer options:
Dean owes $19
Dean owes $9
Dean has a positive $9
Dean has a positive $19

Answers

dean now owes $9 because -14 - (-5) is the same as -14+5, or 5 - 14

esdhvh,dsa,jgvgda,jkv,dkhfdshtrjea

sooo like I need some help?

Answers

Answer:

11?

Step-by-step explanation:

The missing side is 4 so 4+4+3=11.. Maybe?

Answer:

4^2 +3^2 =5^2

=25

Step-by-step explanation:

Pythagorean Theorem.

Which set of numbers shows all the factors of 18?
A.1,3,6, 18
B.9, 18, 27, 36
C.1, 2, 3, 6, 9, 18
D.18, 36, 54, 72, 90

Answers

Answer:

C

Step-by-step explanation:

1*18 2*9 3*6

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