A certain game consists of rolling a single fair die and pays off as follows: $10 for a 6, $7 for a 5, $4 for a 4, and no payoff otherwise,
Find the expected winnings for this game.
The expected winnings for this game are
(Round to the nearest hundredth.)
1
m
21
m
se
?
Enter your answer in the answer box.
Answers
Answer:
$3.50
Step-by-step explanation:
Given:
$10 for a 6, $7 for a 5, $4 for a 4, and no payoff otherwise
P(6) = 1/6 ; p(5) = 1/6 ; p(4) = 1/6 ; p(1,2or3) = 3/6 = 1/2
P(x) ____ 1/6 _____ 1/6 _____1/6 _____1/2
x______ 10 _______ 7 _____ 4 _______ 0
Expectwd value ; E(x)
Σx*p(x) = (1/6 * 10) + (1/6 * 7) + (1/6 * 4) + (1/2 * 0)
E(x) = 3.50
Related Questions
The table shows the displacement-time data for a ship relative to a shore.
t(hours) 2.95 3.15 3.75 3.95 3.99 4.00
s(0 (miles) 14.95 17.61 27.23 31.01 31.80 32.00
Estimate the instantaneous velocity of the ship at t = 4 hours.
A.
20.00 mi./h.
B.
20.15 mi./h.
C.
20.25 mi./h.
OD.
20.50 mi./h.
Answers
Answer:
Step-by-step explanation:
s 77 600 seconds is how many days.
Answers
Answer:
3233.3333333333 days.
Step-by-step explanation:
Answer: 77,600 Hours = 3,233.3333 Days
Step-by-step explanation:
I don't know why there's a space between 77 and 600 so I put then together and I have no clue why there is an s in the beginning so I ignored it
HI CAN SOMEONE THAT REALLY KNOWS ABOUT THIS HELP ME WITH FINAL EXAM...
The data represented by the following stem-and-leaf plot range from
to
489
5147
6235
769
A. 49; 79
B. 48; 79
C. 48; 76
D. 49; 76
Answers
The minimum value is always at the start of the plot, and the maximum is always at the end.
Triangle Q R S is cut by line segment V W. Point V is the midpoint of side Q S and point W is the midpoint of side R S. The length of Q R is 3 a + 6, the length of V W is 2 a minus 2, and the length of V S is 2 a.
If V is the midpoint of Line segment Q S and W is the midpoint of Line segment R S, then what is VS?
4 units
8 units
10 units
20 units
Answers
Answer:
20 units
Step-by-step explanation:
We can see that triangle QRS and triangle VWS are similar triangles.
Similar triangles are triangles in which the ratio of their corresponding sides are in the same proportion.
V is the midpoint of QS.
VS = 2a, QS = 2 * VS = 2(2a) = 4a
Since both triangles are similar triangles, hence:
\begin{gathered}\frac{VS}{QS}=\frac{VW}{QR}\\\\\frac{2a}{4a} =\frac{2a-2}{3a+6} \\\\\frac{2a-2}{3a+6} =\frac{1}{2} \\\\2(2a-2)=3a+6\\\\4a-4=3a+6\\\\a=10\ units\\\\VS=2a=2(10)=20\ units\end{gathered}
QS
VS
=
QR
VW
4a
2a
=
3a+6
2a−2
3a+6
2a−2
=
2
1
2(2a−2)=3a+6
4a−4=3a+6
a=10 units
VS=2a=2(10)=20 units
ur wlcm♥️♥️
Answer:
20 UNITS
Step-by-step explanation:
EDG 2020
how do your find solution to z^5 = *7776i
Answers
Answer:
you have to solve for z, z = 6\root(5)(i), this to the power of 5 equals 77761
Step-by-step explanation:
A company needs to hire a new director of advertising. It has decided to try to hire person A or B, who are assistant advertising directors for its major competitor. To decide between A or B, the company finds that A is in charge of 2/3 of the total accounts while Peron B is in charge of only 1/3 of the accounts. Also, A’s campaigns have satisfactory results 3 out of 4 times, while B’s campaigns has satisfactory results only 2 out of 5 times. Suppose one of the competitors ad campaigns is selected randomly
a) Draw the tree diagram of the info above
b) Find the probability that A is in charge of the selected campaign and that is produces satisfactory results
c) Find the probability that the selected campaign is satisfactory
Answers
Answer:
b) 0.5
c) 0.633
Step-by-step explanation:
a) Please find the attached image - tree diagram
b) b) The probability that A is in charge of the selected campaign and that it produces satisfactory results = 2/3 * 3/4 = 1/2 = 0.5
c) P (selected campaign is satisfactory)
= P(A's campaign and satisfactory) + P(B's campaign and satisfactory)
= 2/3*3/4 + 1/3*2/5
= 0.6333
Jason leaves Detroit at 4:00 PM and drives at a constant speed west along I-94. He passes Ann Arbor, 40 mi from Detroit, at 4:40 PM. (a) Express the distance d traveled in terms of the time t (in hours) elapsed. d(t)
Answers
Time in hours is +48%2F60+=+4%2F5++ hrs
+40+=+r%2A%284%2F5+%29+
+r+=+%285%2F4%29%2A40+
+r+=+50+ mi/hr
+40+=+50%2A%284%2F5%29+
A study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The commercials were for clothes, food, and toys.
Clothes Food Toys
43 30 52
24 38 58
42 46 43
35 54 49
28 47 63
31 42 53
17 34 48
31 43 58
Required:
a. Find the values of mean and standard deviation.
b. Is there a difference in the mean attention span Of the children for the various commercials?
Answers
Answer:
(a)
Mean
[tex]\bar x_1 = 31.375[/tex]
[tex]\bar x_2 = 41.75[/tex]
[tex]\bar x_3 = 53.00[/tex]
Standard deviation
[tex]\sigma_1 = 8.73[/tex]
[tex]\sigma_2 = 7.65[/tex]
[tex]\sigma_3 = 6.04[/tex]
(b) Yes, there is a difference in the mean
Step-by-step explanation:
Solving (a): The mean and standard deviation of each commercial
This is calculated as:
[tex]\bar x = \frac{\sum x}{n}[/tex]
For clothes:
[tex]\bar x_1 = \frac{43+24+42+35+28+31+17+31}{8}[/tex]
[tex]\bar x_1 = \frac{251}{8}[/tex]
[tex]\bar x_1 = 31.375[/tex]
For food:
[tex]\bar x_2 = \frac{30+38+46+54+47+42+34+43}{8}[/tex]
[tex]\bar x_2 = \frac{334}{8}[/tex]
[tex]\bar x_2 = 41.75[/tex]
For toys:
[tex]\bar x_3 = \frac{52+58+43+49+63+53+48+58}{8}[/tex]
[tex]\bar x_3 = \frac{424}{8}[/tex]
[tex]\bar x_3 = 53.00[/tex]
The sample standard deviation is:
[tex]\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}[/tex]
For clothes:
[tex]\sigma_1 = \sqrt{\frac{(43 - 31.375)^2 +.............+(31 - 31.375)^2}{8-1}}[/tex]
[tex]\sigma_1 = \sqrt{\frac{533.875}{7}[/tex]
[tex]\sigma_1 = \sqrt{76.2678571429}[/tex]
[tex]\sigma_1 = 8.73[/tex]
For food:
[tex]\sigma_2 = \sqrt{\frac{(30 - 41.75)^2 +............+(43 - 41.75)^2}{8-1}}[/tex]
[tex]\sigma_2 = \sqrt{\frac{409.5}{7}}[/tex]
[tex]\sigma_2 = \sqrt{58.5}[/tex]
[tex]\sigma_2 = 7.65[/tex]
For toys:
[tex]\sigma_3 = \sqrt{\frac{(52-53.00)^2+...................+(58-53.00)^2}{8}}[/tex]
[tex]\sigma_3 = \sqrt{\frac{292}{8}}[/tex]
[tex]\sigma_3 = \sqrt{36.5}[/tex]
[tex]\sigma_3 = 6.04[/tex]
Solving (b): Difference in mean in the commercials;
In (a), we have:
[tex]\bar x_1 = 31.375[/tex]
[tex]\bar x_2 = 41.75[/tex]
[tex]\bar x_3 = 53.00[/tex]
[tex]\bar x_1 \ne \bar x_2 \ne \bar x_3[/tex]
Hence, there is a difference in their means
What type of connection can you make between markups and tips or taxes?
Answers
Answer:
Tips or taxes add money to a bill. This is the same as a markup. Markdowns are the same as discounts.Step-by-step explanation:
what is the width of a triangle that has a 15 cm height and hypotenuse of 19 cm
Answers
Answer:
Pythagorean Theorem
Question Answer
Find the width of a triangle that has a 15cm height and a hypotenuse of 19cm. 11.7cm
A helicopter rises straight up 300m then flies west 400m. How far is it from the beginning (if it travels in a straight line back)?
What is the distance between the points?
Answers
Answer:
[tex] \sqrt{113} [/tex]
Step-by-step explanation:
To find the distance between the two points, apply the distance formula given as:
[tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
Where,
[tex] (-4, -5) = (x_1, y_1) [/tex]
[tex] (4, 2) = (x_2, y_2) [/tex]
Plug in the values
[tex] d = \sqrt{(4 -(-4))^2 + (2 -(-5))^2} [/tex]
[tex] d = \sqrt{(8)^2 + (7)^2} [/tex]
[tex] d = \sqrt{64 + 49} [/tex]
[tex] d = \sqrt{113} [/tex]
The formula in finding the distance between two points is given below:
[tex] \boxed{\bold{\:\:d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \:\:}}[/tex]Now, you know the distance formula. So, let us try solving the given problem using the distance formula.
Problem: Determine the distance between (-4, -5) and (4, 2).
From inspection on the given problem:
[tex]\sf (x_1, y_1) = (-4, -5)[/tex][tex]\sf (x_2, y_2) = (4, 2)[/tex]Substitute the given values into the distance formula and solve for d:
[tex]\sf d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex][tex]\sf d = \sqrt{[4 - (-4)]^2 + [2 - (-5)]^2}[/tex][tex]\sf d = \sqrt{(8)^2 + (7)^2}[/tex][tex]\sf d = \sqrt{64 + 49}[/tex][tex]\bold{d = \sqrt{113} \approx 10.6 \: units}[/tex]Therefore, the distance between two points is [tex]\sqrt{113}[/tex] or 10.6 units.
[tex]\\[/tex]
Now, wasn't that easy? Try this sample problem:
Find the distance between P(1, 3) and Q(7, 11).From the sample problem above, you may solve it on your own to enhance your skill on calculating the distance.
For more information about the Distance Formula, just visit this link: https://brainly.com/question/18156437
[tex] {7}^{2n + 1} \div 49 = {7}^{3} [/tex]
What the value of n
Answers
Step-by-step explanation:
[tex] {7}^{2n + 1} \div 49 = {7}^{3} [/tex]
[tex] {7}^{2n + 1} \div {7}^{2} = {7}^{3} [/tex]
[tex] {7}^{2n + 1 - 2}= {7}^{3} [/tex]2n-1=32n=4n=262.5% of a number is 25. What is half of the same number.
Answers
let the number be b
62.5/100 x b = 25
0.625 x b = 25
b =25/0.625
b=40
half of b= 40/2 = 20
Work out 7/9×18/63 Give your answer in its simplest form.
Answers
Answer:
2/9
Step-by-step explanation:
7/9×18/63
Rewriting
7/63 * 18/9
1/9 * 2/1
2/9
[tex]\longrightarrow{\green{ \frac{2}{9}}}[/tex]
[tex]\sf \bf {\boxed {\mathbb {Step-by-step\:explanation:}}}[/tex]
✒[tex] \: \frac{7}{9 } \times \frac{18}{63} [/tex]
✒[tex] \: \frac{2}{9} [/tex]
[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]
If the diameter of the Ferris wheel is 70 feet across, find the total distance traveled in one revolution.
Answers
Answer: Assuming pi is rounded off to 3.14, it is 219.8 feet; if not it is 70π feet
Circumference=one revoloution
Circumference=Diameter times pi
C=Dπ
C=3.14*70
=219.8
219.8 feet
please help out
3/2÷5
Answers
Answer:
0.3Step-by-step explanation:
[tex] \frac{3}{2} \div 5[/tex]
[tex] = \frac{3}{2} \times \frac{1}{5} [/tex]
[tex] = \frac{3}{10} [/tex]
= 0.3 (Ans)
Answer:
3/10
Step-by-step explanation:
3/2÷5
3/2÷5/1
3/2÷10/2 ( LCM of denominators)
3/2×2/10 ( Reciprocal of 10/2)
3/10 (Cancelling 2 by 2)
What is the effect on the graph of the function f(x) = 2* when f(x) is replaced with f(-x)?
A)
vertical stretching
B)
vertical compression
horizontal compression
D)
horizontal stretching
Answers
find the six rational numbers between -4 and 5/4
Answers
Answer:
1,0,-1,-2,-3,-3/10
Step-by-step explanation:
5/4 = 1.25
Therefore 6 rational numbers between - 4 and 5/4:
1,0,-1,-2,-3,-3/10
Find the probability of this event. Enter the answer as a fraction in simplest form, as a decimal, and as a
percent.
You choose a marble at random from a bag containing 12 red, 12 blue, 13 green, 5 yellow, and 18 black
marbles.
The marble is red.
The probability expressed as a fraction is
The probability expressed as a decimal is
The probability expressed as a percent is
%.
Answers
1/5
0.2
20%
Please mark brainliest!
Q2 find the degree of the polynomial
x4(4x+1)
Answers
Step-by-step explanation:
x⁴(4x+1)
4x⁵+x⁴
degree is 5
Which is the polynomial function of lowest degree with leading coefficient of 4 and roots 7 and 3?
O f(x)= x2 – 3x-+3-17
O f(x)= 4x² -1245x+3/7
O f(x)=x2 – 3x? – X+21
O x) = 4x° - 12x - 28x+84
Answers
Answer:
Step-by-step explanation:
If the roots are 7 and 3, then x = 7 and x = 3 are solutions. In factor form, x = 7 is (x - 7); in factor form, x = 3 is (x - 3). We FOIL these together to get
[tex]x^2-3x-7x+21[/tex] which simplifies to
[tex]x^2-10x+21[/tex] and we distribute in the 4:
[tex]4(x^2-10x+21)[/tex] to get
[tex]4x^2-40x+84[/tex] which is another way to write the last choice you're given.
The expression w^4 - 36 is equivalent to
Answers
Answer:
(w² + 6)(w² - 6)
Step-by-step explanation:
difference of squares
w⁴ - 36 = (w² + 6)(w² - 6)
Round 25,471 to the nearest ten thousand.
Answers
help me please it’s timed !!!
Answers
While
AB is A. 5Welcome :)Suppose you and a friend are playing this game. You draw a card from a bag. Each card has one letter on it.
There is one card for every letter in the words WHO WILL WIN.
If you draw a W, you win,
If your friend draws an L, she wins.
Is this a fair game? Explain.
Answers
Answer:
No it is not fair how can two people win
Interpret the 95% confidence interval for average BMI. What do the lower and upper bounds of the confidence interval tell us?
Answers
Answer:
(26.2252 ; 27.3748)
Step-by-step explanation:
The confidence interval is given by :
x ± Margin of error
The margin of error = Zcritical * (σ/√(n))
σ = 7.5 ; n = 654
Zcritical = Zα/2 = 1.96
The margin of error = 1.96 * (7.5/√654) = 0.5748
The confidence interval :
Upper boundary = 26.8 + 0.5748 = 27.3748
Lower boundary = 26.8 - 0.5748 = 26.2252
(26.2252 ; 27.3748)
We are 95% confident that the mean BMI of the entire population will fall in between (26.2252 ; 27.3748)
A. Direction: Find the area of the following circle:
1)
Radius= 5cm
Area=________
2)
Radius= 3.2 cm
Area= ________
3)
Diameter= 10 cm
Area= ________
Pasagot po plss. Pasahan kona po sa lunes:))
Answers
Answer:
Here,
Step-by-step explanation:
1. Area = 78.57 cm²
2.Area = 32.18 cm²
3. Radius= diameter/2
so area = pi.r²
area = 78.57 cm²
Olivia can bake 95 cookies in 5 hours. At this rate, how many cookies can she bake
in 11 hours?
Answers
Answer:
Olivia will make 209 cookies on 11 hours
Step-by-step explanation:
if she makes 95 per 5 hours
we can make
5 + 5 = 10
this is the same as doing
95 + 95 = 190
now, for the 1 hour
95 : 5 = 19
now to verify it
19 x 5 = 95
now you make
95 + 95 + 15 = 209
Oops, srry my bad, i fixed the thing i did wrong
a 16- ounce package of cereal costs $4.00. what is the units cost?
Answers
Answer:
1 oz = $25
Step-by-step explanation:
Answer:
1 OZ= 25 cents.................. this is correct
Step-by-step explanation:
you multiple 16 times .25 which gets 4.00
I need help with this math problem please
Answers
have a great day!
photo attached below :)
Answer:
option D
Step-by-step explanation:
[tex]9x^2 + 6x - 17 = 0 , \ where \ a = 9 \ , \ b = 6 \ , c = - 17[/tex]
[tex]x = \frac{ - b \ \pm \sqrt{b^2 - 4ac}}{2a} \\\\x = \frac{-6 \pm \sqrt{36 - (4 \times 9 \times -17)}}{2 \times 9}\\\\x = \frac{-6 \pm \sqrt{ 36 + 612}}{18}\\\\x = \frac{-6 \pm \sqrt{ 648}}{18}\\\\x = \frac{-6 \pm \sqrt{ 2^3 \times 3^4}}{18}\\\\x = \frac{-6 \pm \sqrt{2 \times 2^2 \times 3^ 4 }}{18}\\\\x = \frac{-6 \pm ( 2 \times 9 )\sqrt{ 2}}{18}\\\\x = \frac{-6 \pm 18\sqrt{2}}{18}\\\\x = \frac{-1 \pm 3 \sqrt{ 2}}{3}[/tex]