George Martin loves The Beatles. Honestly, who doesn’t? On George’s favorite Spotify playlist, 40% of the songs are by The Beatles. During a long road trip, George shuffled his playlist and listened to 30 songs. What is the probability that at least half of the songs on the trip were by The Beatles? Don’t forget to check appropriate conditions before you do your computations. Note: you can assume the playlist is infinite in length.
Answers
Answer:
17.5%
Step-by-step explanation:
First of all, see this situation as a cumulative binomial distribution. You have isolated trials with a probability of success. This makes it binomial. The wording of the question "what is the probability of at least half..." makes this cumulative.
There are a few ways to calculate this, and I'm not quite sure which way you're familiar with. I'll show the cumbersome way and use wolfram to make the calculation.
First, I'll calculate the probability for 15 success, given 30 trials.
30c15*0.4^15*0.6^15
Since the question asks for the probability of at least 15 success, I'll have to make a calculation for the probability of 16 successes, then 17, and so on. Then I'll have to add all the probabilities together. So, I'll use wolfram for that (see attached)
Related Questions
7) A store has a sale for 10% off. You decide to buy a $17 DVD.
A) How much money will you save?
1
I
B) How much money will you spend on the DVD?
Answers
Answer:
a) $15.30
b) $32.30
Step-by-step explanation:
a) 0.10 x $17.00 = $1.7
$17.00 - $1.7 = $15.30
You will save $15.30 on the DVD
b) $15.30 + $17.00 = $32.30
You will spend $32.30 on the DVD
You will save $1.70
B. 17.00-1.70= 15.30
You will spend $15.30 on the DVD.
Write a linear function that relates y to x .
y=
Answers
Answer:
y = x-2
Step-by-step explanation:
find the slope. 0,-2 and 2,0
0- -2 / 2-0 = 1
y-0 = 1(x-2)
y = x - 2
Plz help if you could I would appreciate it :)
the highlighted ones only
Answers
Step-by-step explanation:
this is the process to convert to the perfect square.
try to bring convert to (x-a)^2 or (X+a)^2
I've done 2 questions hope it gives u the basic idea .
angle A and angle B are supplementary angles. If m angle A = (2x + 26)° and m
angle B = (x + 25)°, then find the measure of angle B.
x=43
Answers
Answer:
m angle B = 68°
Step-by-step explanation:
Since they are supplementary, they add up to 180°
(2x+26) + (x+25) = 180
add like terms together
3x+26+25=180
simplify the left side
3x+51=180
subtract 51 from both sides
3x=129
divide both sides by 3
x=43
Then you plug in x into measure B
(43)+25
68
Help me please answer both ...
Answers
I cant see any question on the attachment it is just a black screen
Kevin went to the nursery and bought a 5 ft tall tree. After planting the tree, Kevin made a table to record the
height, h, of the tree, t years after it was planted. Verbally describe the relationship between h and t.
t 0 1 2 3 4
h 5 6 7 8 9
3. By using the table in question 2, write an equation to illustrate the relationship between the height of the tree
and the number of years since it was planted. How tall will the tree be in 8 years?
Answers
Answer:
h=y+5
Step-by-step explanation:
dont be mad, im not sure
Congruen Figures lyures Which figure is congruent to the given figure? Will give brainliest
Answers
Answer: Its the rectangle thats going upwards not flat.
Step-by-step explanation:
Answer: The rectangle at the very top and the one at the bottom are congruent.
Step-by-step explanation: REMEMBER YALL: congruent means the same( in geometry)
//Give thanks if helpful :)//
Need to know now!
How do you solve “at this rate...”
Answers
Answer: you do the length times width
Step-by-step explanation:
Answer:
"At this rate" for me usually will be some sort of dividing
Clyde made lasagna for dinner last night and 1/3 of it was left over clyde will share the leftover lasagna equally with his brother for lunch what diagram could they use to find the fraction of the whole lasagna that each will have for lunch?
Answers
Answer:
hwlllo
Step-by-step explanation:
18-
3. Your family is planning to take the Amtrak train from Hartford to New York City for a day trip. As a result
of some research you learn that your friend Jackie took the train with a group of 3 adults and 5 children and
it cost them $269.50. A cousin also took the train to the city with a group of 2 adults and 3 children and it
cost them $171.50. Find the price of an adult's ticket and the price of a child's ticket.
Answers
Answer: 67.37 for adult 45.91 for child
Step-by-step explanation:
what is the value of x for 3x+4y=16
Answers
Answer:
5.333
Step-by-step explanation:
Give the graphs of f(x) and g(x), what is f (f (2)) ?
Answers
Answer:
3
Step-by-step explanation:
Because on the graph when x is 2 y is 3 ( look on the red line that's the f(x0 graph)
(-5,-3) (5,5)
slope
What is the slope ?
Answers
Answer:
The slope is 10/8
Step-by-step explanation:
You would rise 10 units and you would run 8 units.
3. Use the equation to answer the following question. 3x2 + 7x - 20 = 0 What are the solutions of the equation?
A. X = 5 and x = 4 3
B. X = - 4 and x = 5 3 4
C. X = and x = -5 3 5
D. X = and x = -4 3
Answers
18n=40
What is n? (please answer fast im doing mid terms and i have no clue what is happening)
Answers
Answer:
n = 40/18
simplify it to 20/9 or as a mixed number i would be 2 2/9
Step-by-step explanation:
Right answer will get brainlist.
Answers
Answer:
645π/2
Brainlist please :)
Describe the rule for the rotation.
How to answer:
____ degrees _________(clockwise or counterclockwise)
Answers
Answer:
Step-by-step explanation:
If you draw a line from the origin (0,0) to L ( the original point ) and a different line from the origin to the image L' you can see the angle of rotation as being
90 degrees and that the rotation is clockwise.
the rule is (x, y) become ( y, -x)
Find the amount of interest owned for a $1,895 loan for 4 years at a 7.9% interest rate
Answers
Answer:
principal (p)=$1895
time (t)=4years
rate(r)=7.9%
Step-by-step explanation:
compound interest amount=p((1+r/100)^t-1)=$1895((1+7.9/100)^4-1)=$1895×((1.355)-1)=$1895×(0.355)=$672.725simple interest=ptr/100=$1895×4×7.9/100=$598.82Answer:
$598.82
yw:) jdbviusdbwsbndj
What is the probability he will roll a 5?
Answers
Answer:
hurt himself if he is 5 pieces away from jail in monopoly and this is his 9th time
Step-by-step explanation:
Plz help.
Will give brainliest answer.
Answers
Step-by-step explanation:
If cats are 10 and dogs are 4 means cats are 6 more than dogs means 4+6 = 10
so 5-6 = -1
32+6= 38
hope it's helpful ❤❤❤❤❤❤
THANK YOU.
#
Given the similarities statement HIJ ~ WXY which angle corresponds with
Answers
Answer:
I
Step-by-step explanation:
plz somebody help me asap i need help
Answers
Answer:
False, True, Falso True
Step-by-step explanation:
Slope is 3/1 or 3
Line hits (0,-5)
Someone buys 6 cakes for 8$ each he sells them for ten each then he got 8 more and selled them for 10$ how much money does he have left???
Answers
Answer: $28
Step-by-step explanation:
The person bought 6 cakes for $8 which reduces his money by:
= 6 * 8
= -$48
He then sells them for $10 each so the money made was:
= 10 * 6
= $60
He then buys 8 more for the same price which will reduce his money by:
= 8 * 8
= -$64
He sells these 8 for $10 so the money made was:
= 8 * 10
= $80
Total money left is therefore:
= 60 + 80 - 48 - 64
= $28
find the perimeter or circumference and area of each figure and round to the nearest tenth
Answers
Answer:D hope this helps :)
What’s the area ? Please help
Answers
Answer:40
Step-by-step explanation:
Answer:
the answer is 40 square units
Step-by-step explanation:
it basically gives you the answer and you just have to choose which one. with area it will always be square units (whatever the unit my be) or units^2
What are the solutions of the equation (x−9)2=64?
Answers
Answer:
17,1
Step-by-step explanation:
I just did this question on the benchmark
The five Smith children run to the ice cream truck. In how many orders can they served one at the time?
Answers
What is the slope of the line that passes through the points (3,-5) and (1,-5)?
Write your answer in simplest form.
Answers
Answer:
The slope is 0.
I think that is how you put it in simplest form
The temperature on Saturday was 6 1/2°C. On Sunday, it became 3 3/4°C colder. What was the temperature on Sunday?
Answers
Answer:
2 3/4
Step-by-step explanation:
6 1/2 - 3 3/4 is the same as 6.5-3.75 = 2.75 or 2 3/4
60% of 15 is what answer
Answers
Answer:9
Step-by-step explanation:
Think of it this way:
If 15=100%
then x= 60%
So what you do is you multply 60 times 15 and divide it by 100 to give you the answer of 9. To me this is the simplest way to do it, I believe it’s called butterfly multiplying. You cross multiply and then you divide.