A bag contains 6 red markers, 5 blue markers, and 4 green markers. A marker is randomly selected, its color is recorded, and it is returned to the bag. This is repeated 1050 times.
How many times is it expected that a red marker will be selected?
A.) approximately 280 times
B.) approximately 350 times
C.) approximately 420 times
D.) approximately 630 times
Answers
Answer:
If I am correct, the answer should be C
Step-by-step explanation:
The expected value of the red marker will be selected is 420. Then the correct option is C.
How to find that a given condition can be modeled by binomial distribution?Binomial distributions consist of n independent Bernoulli trials.
Bernoulli trials are those trials that end up randomly either on success (with probability p) or on failures( with probability 1- p = q (say))
Suppose we have random variable X pertaining to a binomial distribution with parameters n and p, then it is written as
\(\rm X \sim B(n,p)\)
The probability that out of n trials, there'd be x successes is given by
\(\rm P(X =x) = \: ^nC_xp^x(1-p)^{n-x}\)
The expected value of X is:
\(\rm E(X) = np\\\)
A bag contains 6 red markers, 5 blue markers, and 4 green markers.
A marker is randomly selected, its color is recorded, and it is returned to the bag.
This is repeated 1050 times.
n = 1050
Then the value of p will be
\(p=\dfrac{^6C_1}{^{15}C_1} = \dfrac{6}{15} = 0.4\)
Then the expected value will be
\(\rm E(X) = np\\\\\rm E(X) = 1050 \times 0.4 \\\\\rm E(X) = 420\)
Learn more about binomial distribution here:
https://brainly.com/question/13609688
Related Questions
-4(-2x + 5) + 2x + 3 =-11
Answers
Answer:
x = 3/5
Step-by-step explanation:
-4(-2x + 5) + 2x + 3 =-11
Distribute
8x-20 +2x+3 = -11
Combine like terms
10x-17 = -11
Add 17 to each side
10x-17+17 = -11+17
10x =6
Divide by 10
10x/10 = 6/10
x = 3/5
Meg is a veterinarian. She found that 20% of the 50 dogs she saw this week were boxers. Steve is also a veterinarian. He found that 1 of the 5 dogs he saw this week were boxers. Does each person need to find the part, the whole, or the percent?
Answers
(7/35)×100 = 20%
Answer:
Meg needs to find the whole
Steve needs to find the percent
brainliest pls
Before sending track and field athletes to the Olympics, the U.S. holds a qualifying meet.
The upper box plot shows the top 12 men's long jumpers at the U.S. qualifying meet. The lower box plot shows the distances (in meters) achieved in the men's long jump at the 2012 Olympic games.
Answers
Answer:
A and C
Step-by-step explanation:
Answer:
A and C
Step-by-step explanation:
PLease help me solve this please
Answers
Answer:
I only did the first page because u need to read a text book to answer the next page.
try reposting it
Select ALL the equations represented by this tape diagram.
Answers
Answer:
I think A, C and D
fillerfillerfiller
Answer:
A, C, and D
Step-by-step explanation:
A is one answer because if you were to add 3.9 and the value of ?, you would get 8.6. The same would apply to C, just backwards because it is 8.6 = 3.9 + ?. Finally, D is another answer because if you subtract 3.9 from 8.6, you will get the value of ?.
Find the distance between (–4, –2) and (–4, 3). Write your answer as a number with no label.
Answers
Answer:
5
Step-by-step explanation:
To solve this problem we could find the distance between -2 and 3. (We can do this because the x values are the same).
On a number line, this distance is 5. So the answer is 5.
Answer: 5 should be it .
Step-by-step explanation:
Henry can write 5|14 fraction of the pages of his novel in 3 hours. At this rate, how many pages can Henry write in 8 hours?
Answers
Answer: 20/22
Step-by-step explanation:
You divide 5/14 by three and then multiply that answer by 8
Andrew has 3 grapes. Chris has "q" fewer grapes than Andrew. Write an expression to represent the number of grapes Chris has.
Use "q" as your variable.
Answers
Answer:
3 - q
Step-by-step explanation:
Hope this helps!
Answer:
3-q
Step-by-step explanation:
If chris has q less then Andrew there Is no way to figure out exactly so, 3 is Andrew and then Chris has q less so 3-q
SHOW YOUR THINKING
Jillian and Dawn are playing a game of miniature golf. In this game, the score on a hole is the number of putts it takes to get the ball into the hole. The winner is the player with the lowest score. After playing 18 holes, Jillian’s mean is 2.4 and Dawn’s mean is 3.3. Which explains who won the game?
Jillian won the game because her score varied less than Dawn’s score.
Jillian won the game because the person with the lower mean took fewer putts on average for each hole.
Dawn won the game because the person with the greater mean played better.
Dawn won the game because her mean absolute deviation was less than Jillian’s.
Answers
Answer: B
Step - By -Step Explanation i got it right on edge2020
-3 + 6x. Which expression shows the correct factorization?
Here are the ones to pick from
1. -2 + -2 +6 +x
2. 6(-2 +x)
3. 6(-2 +x)
4. -3 (1 - 2x)
Answers
Answer:
Option #4
Step-by-step explanation:
Expand option #4
=-3(1-2x)
=-3 -2x*-3
=-3+6x which is what your original equation was.
Sandy bought 12 7/8 pounds of peaches to make jam. She and her mother ate 0.75 of a pound of the peaches before making the jam. They used 9 3/8 pounds of the peaches to make the jam. How many pounds of peaches were left over?
SHOW WORK or i'll just take your answer off and let someone else answer -3-
Answers
Answer: 2.750
Step-by-step explanation: make 12 7/8 into a decimal then subtract 0.75 to 12.875 than you have 12.125 now you subtract 9. 375 to 12.125 and you have your answer I hope this is right
Work-
1. Turn .75 into a fraction which is 3/4.
2. Then change the denominator to be common with the other which would make it 6/8.
3. Then make 12 7/8 into a improper fraction which is 103/8 and subtract the 6/8 to get 97/8.
4. Then change 9 3/8 into an improper fraction which is 75/8.
5. Subtract 75/8 from 97/8 to get 22/8.
6. Lastly, change it to a mixed number which would come out to be 2 6/8.
please help me with this math :
Answers
I'm not sure if there's supposed to another one but the the only answer I've got is B
B is approxapproximately 15 while the rest are under 12.
For Thanksgiving, Mario bought a 21.9 pound turkey, Rose bought a 21.147 pound turkey and Celia bought a 22.1 pound turkey. Who bought the smallest (lowest weight in pounds) turkey?
Answers
Answer:
Rose.
Step-by-step explanation:
21.147 may have the most numbers, but it is the smallest because there is a 1 in the tenths place
Simple math, earn points!
Answers
Answer:
$7000
Step-by-step explanation:
This problem seems scary at first sight, but don't be intimidated. It is actually pretty simple.
The column of equations (starting with 0.1d) at the right of T(d) is a list of option based on d, the taxable income. If d is less than or equal to (≤) 9875, than the equation is T(d) = 0.1d.
It shows that Noam has 90000 dollars for d, or the taxable income, and Betty has 120000 dollars.
Now, let's find the equations by plugging in 90,000 for d first.
90,000 is greater than 85, 526 and less than 163,300 (85, 526 ≤ 90,000 ≤ 163300).
Then we plug in 120,000 dollar to find the corresponding equation.
120000 is greater than 85, 526 and less than 163, 300 (85, 526 ≤ 120,000 ≤ 163300).
So the chosen equation is:
T(d) = .24( d -85525) + 14605.5
Plug in the Noam's number for d
T(d) = .24(90,000 - 85, 525) + 14, 605.5
T(d) = .24(4475) + 14,605.5
T(d) = 1074 + 14,605.5
T(d) = 15, 679.5
Now Plug in Betty's number for d
T(d) = .24 (120,000 - 85, 525) +14, 605.5
T(d) = .24( 34475) + 14, 605.5
T(d) = 8274 + 14, 605.5
T(d) = 22, 879.5
We are finding how much more tax does Betty pay, so we subtract 15, 679.5 from 22, 879.5.
22, 879.5 - 15, 679.5 = 7200
Betty pays $7000 more tax than Noam does.
Please helpp!! Ty ty!♡♡
Answers
Answer:
25
Step-by-step explanation:
4a +12 -2c + c
4( ) + 12 - 2( ) + ( )
4(4) + 12 - 2(3) + 3
16 + 12 - 6 + 3
28 - 6 + 3
22 + 3
25
Helping in the name of Jesus.
Therefore, 4a + 12 - 2c + c = 25
Step-by-step explanation:a = 4
c = 3
Swap letters for numbers:4a + 12 - 2c + c
(4)(4) + 12 - (2)(3) + 3
16 + 12 - (2)(3) + 3
28 - (2)(3) + 3
28 - 6 + 3
22 + 3 = 25
Draw a conclusion:
Hence your answer is:4a + 12 - 2c + c = 25
I hope this helps!
Can someone please help me-?
Answers
Answer:
Step-by-step explanation:
I wanted to reach out and apologize for the mistake that occurred. I understand that it caused some inconvenience and take full responsibility for it. Please know that it was not intentional and I am committed to ensuring that it does not happen again. Thank you for being so understanding and please let me know if there is anything else I can do to make things right.
X Y
-7 0
0 1
What is the slope of the linear function represented in
the table?
*-7
07/1
01/1
07
Answers
the formula for slope is rise over run, or y1-y2 divided by x1-x2. we can choose either number as y1 or y2 but it needs to stay consistent with x
so let’s plug in from your table.
0-1 divided by -7 -0
(you could also do 1-0 divided by 0-(-7))
-1/-7 which equals 1/7
so, your slope is 1/7
I hope this helps! :)
ANSWER PLEASE QUICK
1. Ishaq put $700 into a Certificate of Deposit (CD) account that earns 1.8% interest each year. What will the interest of the CD account be after 6 years?
Answers
What is 1+1. I’m really wondering of what your thoughts will be on this one.
Answers
Answer: Depending on the situation, 2 or 11
Step-by-step explanation:
1 + 1 = 2
1+1 = 11
Answer:
Step-by-step explanation: So you take 1 and add it the other 1 and it equals 2
A square has
side
lengths of 3/4 in.
What is its area?
Answers
Hey there! :)
Answer:
A = 9/16 in².
Step-by-step explanation:
Use the formula A = s² to solve for the area where s = 3/4 in:
A = (3/4)²
A = 9/16 in².
━━━━━━━☆☆━━━━━━━
▹ Answer
9/16 in²
▹ Step-by-Step Explanation
Square → 4 sides
All sides are equal in a square so →
s = a²
= 3/4²
= 9/16 in²
Hope this helps!
CloutAnswers ❁
Brainliest is greatly appreciated!
━━━━━━━☆☆━━━━━━━
7th grade math I'll give brainliest
Answers
Answer:
Step-by-step explanation:
Rise over run is the slope, m
m=2/5
a) the slope is 2/5 = .4 which is below the boundary guideline. So no this is not with in carpenter's guidelines
b) the image below show a line with slope 2/5 but with intercept 3
c) the stairs can be draw on the line with rise 2 run 5 from the line. see image
d)equation is in image
2.
a) count the squares
horizontal distance =3
vertical distance =3
b) slope is vertical distance over horizontal distance so m= 3/3 =1
can someone help me please
Answers
The circumference of a circle is 100.48 inches. What is the circle's diameter? Use 3.14 for .
pleaseeeeeeeee say me now please
Answers
Answer:
d = 32 inches
Step-by-step explanation:
C = 2 × 3.14 × r
100.48 = 2 × 3.14 × r
Now divide 100.48 by 2 and 3.14 to get the radius:
r = 16 inches
The radius is half of the diameter, so...
d = 32 inches
A rectangular prism is 2 inches by 4 inches by 6 inches.
Kimaya says, “It takes more 2/5-inch cubes to fill the prism than 1/5-inch cubes.”
Do you agree with Kimaya? Explain or show your reasoning.
Answers
No, I do not agree with Kimaya. The volume of the rectangular prism is 2 inches x 4 inches x 6 inches = 48 cubic inches. To fill the rectangular prism with 2/5-inch cubes, you would need 48 cubic inches / (2/5) cubic inches per cube = 120 cubes. To fill the rectangular prism with 1/5-inch cubes, you would need 48 cubic inches / (1/5) cubic inches per cube = 240 cubes.
So, it takes less 2/5-inch cubes to fill the prism than 1/5-inch cubes.
Another way to think of it is that the larger the cubes, the less number of cubes you need to fill the same volume, as the cubes are larger in size.
Simple Explanation: 2/5 in. cubes are more than 1/5 in. cubes, so 1/5 in. cubes would take 2x more to fill than 2/5 in.
Complex Explanation: 2 in. x 4 in. x 6 in. is 48 cubic in. and to fill 48 cubic in. using 2/5 in. per cube, it would be 120. as for 1/5 in., to fill 48 cubic in. with that would be 240. Easier way to think of it is that 2/5 in. cubes are already 120 and 1/5 would be doubling that so all you gotta do is multipy 120 x 2 since filling it with 1/5 would be 2x the amount than 2/5.
Hope this helped :D
At the zoo, 1/3 of the animals are mammals. 1/4 of the mammals are elephants. What fraction of the animals at the zoo are elephants?
awnser choices:
1/12
1/7
2/4
2/3
Answers
Answer: 1/12
Step-by-step explanation:
1/3 x 1/4 = 1/12
can someone help me with this question
Answers
9514 1404 393
Answer:
28 square units
Step-by-step explanation:
The figure can be decomposed several ways. Maybe easiest to see is as a 8×4 rectangle with a 2×4 right triangle cut from the corner.
The area of the rectangle is ...
A = LW = (8)(4) = 32
The area of the missing triangle is ...
A = 1/2bh = 1/2(2)(4) = 4
Then the area of the shaded figure is ...
32 - 4 = 28 . . . square units
_____
Alternate solution
If you divide the figure with a horizontal line across the middle, it becomes a 4×4 square and a trapezoid with bases 2 and 4 and height 4. The shaded area is the sum of these areas.
The area of a trapezoid is ...
A = 1/2(b1 +b2)h
A = (1/2)(2 +4)(4) = 12
The area of the square is ...
A = s² = 4² = 16
Then the total area is ...
12 +16 = 28 . . . square units
The area of the triangle below is 1/20
square feet. What is the length of the base? Express your answer as a fraction in simplest form.
Answers
Answer:
base = 1/2
Step-by-step explanation:
area of triangle = (b x h)/2
1/20 = b(1/5)/2
(1) x (2)=b(1/5) x 20
2=4b
b = 2/4
b = 1/2
The table shows the number of goals made by two hockey players.
Player A Player B
2, 3, 1, 3, 2, 2, 1, 3, 6 1, 4, 5, 1, 2, 4, 5, 5, 11
PLS HELP! AND FAST.
Find the best measure of variability for the data and determine which player was more consistent.
Player B is the most consistent, with an IQR of 3.5.
Player B is the most consistent, with a range of 10.
Player A is the most consistent, with an IQR of 1.5.
Player A is the most consistent, with a range of 5.
Answers
Answer: Player B is the most consistent, with an IQR of 3.5.
Step-by-step explanation:
For Player A, the IQR is 2 (Q3 - Q1 = 3 - 1 = 2).
For Player B, the IQR is 3.5 (Q3 - Q1 = 5 - 1.5 = 3.5).
Therefore, Player B is more consistent, as their IQR is larger, indicating less variability in their scores.
What value of x makes the equation true?
Answers
Answer:
A: x = - 3
Step-by-step explanation:
On the left hand side we see four -x's and nine -1's
Therefore the LHS computes to 4(-x) + 9(1)
4(-x) + 9(1) = -4x + 9
On the RHS there are eight -x's and 3 -1's
RHS becomes
-8x - 3
Setting LHS = RHS gives
-4x + 9 = -8x - 3
Add 8x on both sides:
8x - 4x + 9 = 8x - 8x -3
==> 4x + 9 = -3
Subtract 9 from both sides
4x +9 - 9 = -9 - 3
4x = -12
x = -3
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Answers
Answer:
y....
Step-by-step explanation:
.f....*hdgdgdaggdfsgygj
Answer:
9
Step-by-step explanation:
Coefficient is a number that is being multiplied by the variable.