cam hits the bullseye in 8 darts out of 15 throws. what is the experimental probability that came next throws will hit the bullseye?

Answers

Answer 1

Answer:

A darts player practices throwing a dart at the bull’s eye on a dart board. Her probability of hitting the bull’s eye for each throw is 0.2.

(a) Find the probability that she is successful for the first time on the third throw:

The number F of unsuccessful throws till the first bull’s eye follows a geometric

distribution with probability of success q = 0.2 and probability of failure p = 0.8.

If the first bull’s eye is on the third throw, there must be two failures:

P(F = 2) = p

2

q = (0.8)2

(0.2) = 0.128.

(b) Find the probability that she will have at least three failures before her first

success.

We want the probability of F ≥ 3. This can be found in two ways:

P(F ≥ 3) = P(F = 3) + P(F = 4) + P(F = 5) + P(F = 6) + . . .

= p

3

q + p

4

q + p

5

q + p

6

q + . . . (geometric series with ratio p)

=

p

3

q

1 − p

=

(0.8)3

(0.2)

1 − 0.8

= (0.8)3 = 0.512.

Alternatively,

P(F ≥ 3) = 1 − (P(F = 0) + P(F = 1) + P(F = 2))

= 1 − (q + pq + p

2

q)

= 1 − (0.2)(1 + 0.8 + (0.8)2

)

= 1 − 0.488 = 0.512.

(c) How many throws on average will fail before she hits bull’s eye?

Since p = 0.8 and q = 0.2, the expected number of failures before the first success

is

E[F] = p

q

=

0.8

0.2

= 4.


Related Questions

Which of the following charts would best show the population percentages of different ethnic groups in one state?

scatter graph
tally chart
line graph
pie chart

Answers

The correct answer is pie chart!
It’s pie chart because think of this 50% of people are American 20% are Australian an Indian and the rest of 10% is European and British and it will be on a pie chart so pie chart is the answer

Aubrey says that the product of 104 and 10–2 is 10–8. Is she correct? If not, explain why.
A. Yes, she is correct.
B. No, the exponent should be positive 8.
C. No, she multiplied the exponents instead of adding them.
D. No, she multiplied the exponents instead of subtracting them.

Answers

Answer:

C

Step-by-step explanation:

No, she multiplied the exponents instead of adding them.

I’m pretty sure the answer is c

Sort the expressions listed at the right into the appropriate bins.
Quotient
Less Than 1.
Quotient
Equal to 1.
Quotient
Greater Than 1.

Answers

I’m not understanding what you mean
It looks like there was a small amount of information given

Question 3 (10 points)

Answers

Answer:

25.15

Step-by-step explanation:

It's due in one minute, but I have time :)

Answers

First: perform the operation in the parentheses
Second: evaluate 3 (2)
Third: divide 8 by 2
Fourth: Add 4 and 9

Not sure if that’s right or not since i havent done this in 2 years but i tried <3 good luck

Answer: 13

Step-by-step explanation:

1: perform the operation in parentheses

2: divide 8 by 2

3: evaluate 3^2

4: add 4+9

Which expression shows the prime factorization of 100?




A 2 × 5 × 10
B 1010
C 10 × 10
D 22 × 52

Answers

None of them? The product in the answer A is in fact 100, but the factors aren’t prime numbers... so i think it would rather be 2x5x5x5=100

Pls help me!! I don’t understand this

Answers

Answer:

Step-by-step explanation:

Since the two equations are parralel toeach other they equal each other, so you would solve for:

2x+4=4x-88

To solve this you can add 88 to each side resulting in 2x+92=4x

Then we would add 2x to both sides getting 92=2x

And then you divide both sides by 2, getting 46 degrees for x

(You can check this by plugging points in)

x=46

thats the answer

Help please! math question!! will give 20 points and brainliest!!

Answers

An equation to find the dimensions of his backyard is 116 divided by 4
that makes his backyard 29 feet on each side if his backyard is a perfect square.
No, his backyard is not big enough for a pool that is 900 feet.
if you multiply 29x29 (to find the area of his back yard), the area is 841 feet, which makes his backyard too small for a pool that big

if you reflect any shape across the x-axis and then rotate it 180 degrees about the origin, do you get the same result that you would if you reflect it across the y-axis and then rotate it 180 degress about the orgin? what does that mean?

Answers

Answer: No the finished shapes would be in different quadrants

Step-by-step explanation:

Addie has the high sales for two months: $3,400 and $2,600. She earns 14% commission. How much is her paycheck?

$840
$1,400
$5,200
$6,840

Answers

$6840 due tonsnshndhdnbendbdjyfnbrhdhdf

Answer:

840

Step-by-step explanation:

P = (3400+2600 " ( 14/100) = 6000" (14/100) = 84000/100 = 840

hope this helps i will also be aprreciate if i get an brainiest :)

Pleasr Help will mark brainly...! How are actual rocket launches similar to how balloon rockets and canister rockets launch?

srry i didnt mean to put math

Answers

Answer:

What to do

Tie one end of the string to a chair, door knob, or other support.

Put the other end of the string through the straw.

Pull the string tight and tie it to another support in the room.

Blow up the balloon (but don't tie it.) ...

Let go and watch the rocket fly!

Love, gocry

A double line graph can compare the changes of two different things over a period of time. True or false

Answers

Answer:

i think this is true because on a line graph nothing stays the same.

Step-by-step explanation:

If we start  line graph on the viruses that are going around the number of deaths and cases would change every day and every second

Answer:

true

Step-by-step explanation:

A toy store’s percent of markup is 30%. A model train costs the store $50. Find the markup.


$65

$35

$166.67

$15

Answers

Answer:  $15

Step-by-step explanation:

To find the markup price just multiply 30% by the amount.

30% * 50  

0.3 * 50 = 15

Answer:

Markup = $15

Step-by-step explanation:

30% of $50 = $15

Which graph represents y as a function of x ?

Answers

Answer:

The second one

Step-by-step explanation:

Simply put, in order to be a function the x can not repeat and that is the only graph where they x does not repeat.

Second one graph is represents y as a function of x.

Here four graph shown.

We have to check which graph shows y as a function of x.

What is function?

If for each value of x, there is only one possible value of y or As a graph, if we trace a vertical line; it cannot cross more than one point of the function; then it is called function.

To solve this question we use the definition of function,

In first graph, when we draw vertical line then it intercepts on graph in more than one point, so it does not represents y as a function of x

Similarly, in third and fourth graph we use vertical line test.

Hence, only in second one graph, the vertical line test will be fulfill.

So, Second one graph is represents y as a function of x.

Learn more about the Function visit:

https://brainly.in/question/30821652

#SPJ6

write the phrase as an expression. Then evaluate when y=20.

3 less than the quotient of a number y and 4

Expression:

When y=20, the value of the expression is
.

Answers

-2 is your final answer

What is 112 / 100 tell me asap

Answers

Answer:

1.12

Step-by-step explanation:

Help Please.
.
.
.
.

Answers

Answer:

angle 5 = angle 1

angle 6=angle 3

angle 2+angle 1+angle 3=180 degrees

angle 2+5+6=180 degrees

HELP HELP HELP HELP HELP HELP HELP
pLeaSe

Answers

Answer:

great job

Step-by-step explanation:

your writhing is amazing where did you learn it

if you reflect any shape across the x-axis and then rotate it 90 degrees clockwise about the origin, do you get the same results as if you reflect it across the y-axis and then rotate it 90 degress counterclockwise about the origin? what does this mean?

Answers

Yes, a shape can be reflected across the x-axis and then rotated 90 degrees in a clockwise direction around the origin to achieve the same results as a shape reflected across the y-axis and rotated in a counterclockwise direction. This implies that these two transformational sequences are similar.

What is reflection in Mathematics?

A reflection is referred to as a flip in geometry. A reflection is the shape's mirror image. A line, called the line of reflection, will allow an image to reflect through it. Every point in a figure is said to reflect the other figure when they are all equally spaced apart from one another.

To know more about reflection refer to :

https://brainly.com/question/26494295

#SPJ2

help me the images are posted

Answers

Answer:

28.

a. false

b. true

c. false

d. false

2. 8.4 X 2.3 X 2.09 = 40.3788

3. $10.04 - $13.47

4. Your friend would be incorrect because their decimal is in the wrong place. Take the decimals out of it and think about it. Can 1 times 2 equal anything near 31? no, so it's not reasonable that your friend could multiply 1.2 X 2.6 and get anything near 31.2

5. It is more reasonable to say between 5 and 6 because even when you round both of the numbers up (3 X 2), you still only get 6.

Step-by-step explanation:

ill put it in the comments so I can get this to you faster.

Bottles of water are on sale!
Did you get a good deal?

Solve this problem in your math notebook, and upload it to the assignment.

Answers

Answer: Less, 44 cents

Step-by-step explanation: The new price is 5/4 of a dollar and in decimal form would be 1.25. The old price is 1.69 dollars meaning the new price is a better deal. To find the difference we subtract 1.25 from 1.69 giving us $0.44

help me look at the photo​

Answers

Answer: 11

Step-by-step explanation: The lines around the numbers mean "absolute value", which, in basic explanation, turn both numbers positive. this makes the equation become 7 + 4 = 11.

Answer:

your awnser is 11 because if it is in the lines things the negetive number turns into posititve  number so 7+4 is 11

hope this helps :)

Step-by-step explanation:

Step 8: Does the direction of the graphed line correspond to the sign of the calculated slope?
-Cannot determine, because the function is neither increasing nor decreasing.
-Yes, because the graph line points up and right and has a positive slope.
-No, because the graph line points down and right and has a positive slope.
-No, because the graph line points up and right and has a negative slope.
-Yes, because the graph line points down and right and has a negative slope.

Answers

3rd choice i think but i could be wrong i’m kinda dumb
3rd choice I believe

A chef needs to increase the temperature of a food dish. She thinks she can do this by stacking another dish on top of it. She has three dishes to choose from for the top dish: A, B, and C. Which one of these dishes would make the food dish the warmest when placed on top of it? As part of your answer, explain how the energy and temperature of both the top dish and the food dish will change when the food dish warms up, and why.

PLEASE HELP!!!

Answers

It would be C because the higher energy the molecules have the warmer they are

Answer:

C

Step-by-step explanation:

LOOK AT PHOTO. PLEASE HELP!!

Answers

Answer:

x=9

Step-by-step explanation:

Answer:

9.

Step-by-step explanation:

this is because 4/12 equals 1/3 and 3/9 is 1/3.. so its 3/9. hope this helped, have a nice day!!

Which statement is true when 2.4 is placed in the blank?

7.2 ÷ ___ = 3
9.6 ÷ 0.4 = ___
14.4 ÷ ___ = 0.6
19.2 ÷ 0.8 = ___

Answers

Answer:

7.2

Step-by-step explanation:

7.2 / 2.4= 3
14.4 / 2.4= 0.6

This is due by today if you could please do question number 2 through 7!!!!!

Answers

U could go on Socratic
I’ve answered all of them in your other post with both pictures

Sandra has 28 fish in her water garden. Twenty-two of her fish are
goldfish and 6 are Japanese koi. Express the part of Sandra's fish that
are goldfish as a decimal. Round the decimal to the nearest hundredth.
a. 0.84 b. 0.21 c. 0.79 d. 0.73 Explain

Answers

Answer:

C 0.79

Step-by-step explanation:

The answer is c .79

write an expression that is equal to -15.66 divided by 5.8 and the fine the quotient

Answers

Answer:

16

Step-by-step explanation:

16 is the right answer

PLEASE ANSWER REAL


Three salesmen working for the same company, selling the same product. And, although they are all paid on a weekly basis, each salesman earns his paycheck differently. Salesman A works strictly on commission. He earns $65 per sale, with a maximum weekly commission of $1,300. Salesman B earns a weekly base salary of $300, plus a commission of $40 per sale. There are no limits on the amount of commission he can earn. Salesman C does not earn any commission. His weekly salary is $900. The following table shows the number of sales each salesman had during the first three weeks of this month

1 2 3
Salesman A 11 14 16
Salesman B 14 15 13
Salesman C 16 12 11

In which week(s), did Salesman C have a larger paycheck than both of the other salesmen? Select all that apply.

Week 3
None of the weeks.
Week 2
Week 1

Answers

Answer:

How come my answer gets deleted when a kid spammed -_-

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