TULI
Spinner A
Spinner
025
05
Tim has two spinners, spinner A and Spinner B.
Each spinner can only land on red or bloe.
The probability that spinner A will land on red is 0.5
The probability that spinner will land on red is 0.6
The tree diagram shows this information
Tim spins spinner A once and he
spins spinner Bonce
He does this a number of times.
The number of times both spinners 0.5
land on red is 84.
Work out an estimate for the
number of times both spinners land on blue.
red
05
blu
blue
Answers
So we would expect both spinners to land on blue once, approximately.
What is probability?Probability is a measure of the likelihood or chance of an event occurring. It is a numerical value between 0 and 1, where 0 means that the event is impossible and 1 means that the event is certain to occur. The closer the probability is to 1, the more likely the event is to occur, while the closer it is to 0, the less likely it is to occur.
Here,
To solve this problem, we can use the multiplication rule of probability, which states that the probability of two independent events A and B occurring together is equal to the product of their individual probabilities:
P(A and B) = P(A) × P(B)
In this case, we want to find the number of times both spinners land on blue, which is equivalent to the probability that spinner A lands on blue (0.5) multiplied by the probability that spinner B lands on blue (0.4), because the events are assumed to be independent. Therefore:
P(both blue) = P(A blue) × P(B blue) = 0.5 × 0.4 = 0.2
This means that the probability of both spinners landing on blue is 0.2, or 20%.
To estimate the number of times both spinners land on blue out of a certain number of trials, we can use the expected value of a binomial distribution, which is given by:
E(X) = n × p
where X is the random variable representing the number of successes (in this case, both spinners landing on blue), n is the number of trials, and p is the probability of success (0.2 in this case).
We are given that the number of times both spinners land on red is 84, which is equivalent to the number of trials minus the number of times both spinners land on blue. Let's denote the number of trials as n. Then we have:
n - 84 = number of times both spinners land on blue
Substituting the values we have found, we get:
n - 84 = 0.2n
Simplifying and solving for n, we get:
0.8n = 84
n = 105
Therefore, the estimated number of times both spinners land on blue out of 105 trials is: number of times both spinners land on blue
= 0.2 × 105 - 84 ≈ 1
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Related Questions
What is the area please help
Answers
Answer:
I think (b.)154.5cm²is the answer
Plz help me well mark brainliest if correct!....
Answers
8 Mangoes = 30 bananas
5 banana= 2 oranges
15 oranges=? mangoes
Answers
Answer:
it would only be 8, unless you need to go down to the decimal point then it would be 8.25
Step-by-step explanation:
it would be 8 because if you need to find how many bananas you have, to do this you would divide 15 by 2 and get 7.5 then you multiply those by 5 to get the number of bananas which would be 37.5, and then if 8 mangos = 30 bananas you only have 8 mangos.
(sorry if this is very jumbled and hard to understand, also getting brainliest would help, thank you)
The water level of a certain lake is at 35 feet. Due to recent storms, the water level is rising
at a rate of 3 inches per day. How many days will it take the lake to reach a level of 40 feet? helpppp!!
Answers
Answer:
20 days
Step-by-step explanation:
40 feet - 35 feet is 5 feet needed to rise
5 x 12 (inches per foot) =60 inches
60 divided by 3 = 20 days
Which temperature is lower
a)-9°C or -10°C
Answers
-10°C is lower than -9°C
Step-by-step explanation:
-10°C is lower than -9°C
The more the temperature increase the more heat increases
Thus, -10°C is lower than -9°C
-TheUnknownScientist
Answer:
Step-by-step explana
-10
What is the multiplicative rate of change of the function???
Answers
i think its 2/3
The multiplicative rate of change of the function will be 2/3. Then the correct option is B.
What is an exponent?Let a be the initial value and x be the power of the exponent function and b be the increasing factor.
The exponent is given as,
y = a(b)ˣ
At (1, 6), then we have
6 = a(b)¹
6 = ab ...1
At (2, 4), then we have
4 = a(b)²
4 = ab ...2
Divide equation 2 by equation 1, then we have
ab² / ab = 4 / 6
b = 2 / 3
The multiplicative rate of change of the function will be 2/3. Then the correct option is B.
More about the exponent link is given below.
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What is the volume of this?
Answers
Answer:
1,832.4
Step-by-step explanation:
To find the base you multiply the radius by itself to pi. Then you multiply that by the height. The next step would be to divide that by 3.
help I want to understand how to do this
Answers
9514 1404 393
Answer:
arc RS = 100°RS is a minor arcarc ST = 80°Step-by-step explanation:
The measure of an arc of a circle is the same as the measure of the central angle it subtends. That is, arc RS has the same measure as central angle RPS, which is marked as 100°.
Of course, the total of all central angles, hence all arcs, of a circle is 360°. A diameter of a circle cuts the circle in half, so each semicircle has a central angle measure and arc measure of 180°.
Any arc that is more than a semicircle is called a "major" arc. If it is less than a semicircle, it is a "minor" arc. Arcs RS and ST are minor arcs.
As always in geometry, the whole is the sum of the parts, so arcs RS and ST are supplementary. They total the measure of semicircle RST, which is 180°. Then ST = 180° -RS = 180° -100° = 80°.
__
Additional comment
Usually, an arc identified only by its end points is a minor arc. If the major arc is intended, then it will either be described as "major arc RS" or a point on the major arc will be given, as "arc RTS". The measure of arc RTS is 280°.
Simplify this expression:
5xy-x^t+2xy+3x^t
Answers
Answer: x(2xt + 7y)
Have a great day.
PLEASE HELP,I WIL GIVE BRAINLIEST.
A rectangular garden has a width of 20 ft and an area of 300 ft. What is the perimeter of the figure?
Answers
Answer:
70 ft
Step-by-step explanation:
300/20 = 15
20x2=40
15x2=30
40+30=70
Answer:
70 ft
Step-by-step explanation:
20 + 20 + 15 + 15
A circle has a diameter of 6 inches.
Show your work to find the following (use
3.14 for pi):
A) Area of the circle
B) Circumference of the circle
Answers
Step-by-step explanation:
to find area
A=Pi x r^2
r = d/2 = 6/2 = 5
to find circumference
u=2 pi r
r=5
what is the x intercept of the graph of y=4x-36
Answers
Answer:
36
Step-by-step explanation:
My explanation to this is that if you look at the problem it will show you 36.
Answer:
9
Step-by-step explanation:
To find the x-intercept, set y = 0
0 = 4x-36
Add 36 to both sides:
0+36 = 4x-36+36
36 = 4x
Divide by 4 on both sides:
36/4 = 4x/4
9 = x
The x-intercept is 9
4. Find Percent Change:
Original Price $50
New Price $60
Answers
Answer:
20% change
Step-by-step explanation:
20 percent of 50 is 10. 50+10=60.
Brainliest please?
XxRoadToAcexX
Please I need help for this..
Kelly works in a grocery store stocking shelves. The graph below shows the money Kelly earns stocking shelves.
Write an equation to represent the money Kelly earns in relationship to the hours she works. Let m represent the money she earns, and let h represent the number of hours she works.
Answers
Answer: m=1/8h
Step-by-step explanation:
When writing a linear equation, the slope is always rise over run. When it rises (goes up) 1, it runs (goes to the side 8. So the slope is 1/8. There is no y intercept because the line passes through (0, 0). The equation is m= because the amount of money earned equals 1/8h.
Twenty times the square of a non-zero number is equal to 20 times the number.
Answers
Answer:
the number could be 0 or 1
Step-by-step explanation:
20x² - 20x = 0
20x(x - 1) = 0
20x = 0
x = 0
x-1 = 0
x = 1
23/100 converted to a decimal
Answers
24427 correct to the nearest 1000
Answers
Answer:
24427 correct to the nearest 1000? 24000.
Step-by-step explanation:
So 24000 is your answer.
peter weighs is 105 kg he wants to lose 500 g per week how many weeks will it take for him to have a mass of 90 kg ?
Answers
Answer:
it will take him 30 weeks
Step-by-step explanation:
2 weeks = 1 kilogram lost
105-90=15
1 x 15 = 15
2 x 15 = 30
Please help I don’t understand this
Answers
An open circle means the inequality is greater than (>) or less than (<)
Since the arrow is pointing to the left towards increasingly lesser numbers, any “x” value will be at the beginning number of 2 or some value less than 2.
Answer: x≤2
The product of a number and 16 is equal to the sum of the number and 14
Answers
Step-by-step explanation:
let number be x
16x = 14 + x
16x - x = 14
15x = 14
x = 14 ÷ 15
x = 0.9
Who’s can help me with this, it is to hard
Answers
Answer:
x = 10
MB = 16
CM = 16
CB = 32
Step-by-step explanation:
Since it's the mispoint
2x - 4 = x + 6
Subtract x from both sides
x - 4 = 6
Add 4 to both sides
x = 10
MB = 2x - 4
MB = 20 - 4
MB = 16
CM = x + 6
CM = 16
CB = 16 + 16
CB = 32
135°
Solve for <2.
62 = [?]
45°
&2
86°
Enter
Answers
Answer:
[tex] \displaystyle \angle2 = {49}^{ \circ} [/tex]
Step-by-step explanation:
remember that,
if a side of a triangle is extended then exterior angle so formed equal to the sum of the two opposite interior angles
thus our equation is
[tex] \displaystyle \angle2 + {86}^{ \circ} = {135}^{ \circ} [/tex]
cancel out 86° from both sides:
[tex] \displaystyle \angle2 = {49}^{ \circ} [/tex]
hence,
the measure of the missing angle is 49°
Answer:
Solution given'
<2+45+86=180°[sum of interior angle of a triangle]
<2=180-131
<2=49°
Find the code word by completing the maze below. To complete the maze you must determine what type of triangle is formed by the given set of dimensions. There are letters in each box that will form the code word you need to unlock puzzle one. The letters will go in order to form the word. MI 4,7,9 Obtusa 5,5,5 obtusa 9.12,15 Acute 12, 16,20 BEGIN Right Acute Right Obtuse N S Acute Right 7, 12, 18 P Acute 15,20,25 1,3,5 6,8,10 Acute Jobtuse Obtuse Right Right 21,28,35 Right P 30, 40, 50 Acute 6, 12,18 12,18,31 Obtuse Obtuse Obtuse Obtuse 3,4,5 Right 2,2,2 Acute 12, 16,20 Right FINISH Code:
Answers
Answer:
Inspiring
I hope this helps
I will be giving brainliest whoever answers these
Answers
Answer:
3, 5, 1, -1, 5, -1, -1, 5
Step-by-step explanation:
Because it is I am tired sorry
How many gallons are in 48 pints?
Answers
Answer:
6
Step-by-step explanation:
Answer:
There would be 6 gallons.
Step-by-step explanation:
Within a gallon, there are 8 pints. With this in mind, create a ratio of gallons to pints to solve the problem
Gallons : Pints
1 : 8
If we were to have 48 pints, there would therefore be 6 gallons, as 48/6 --> 8
Gallons : Pints
6 : 48
Suppose that a population parameter is 0.7 and many samples are taken from the population. If the size of each sample is 100, what is the standard error of the distribution of sample proportions?
Answers
Answer: .046
Step-by-step explanation: I just had this question
The statement : "for a sample size of n = 26 and a population parameter of p = 0.6, a normal curve can be used to approximate the sampling distribution" is true.
What is normal curve?Normal curve is used to represent the class shapes in the statistical probability. Mathematically, we can describe the normal curve as -
[tex]$f(x)= {\frac{1}{\sigma\sqrt{2\pi}}}e^{- {\frac {1}{2}} (\frac {x-\mu}{\sigma})^2}[/tex]
where -
f(x) = probability density function
σ = standard deviation
μ = mean
Given is that for a sample size of n = 26 and a population parameter of
p = 0.6, a normal curve can be used to approximate the sampling
distribution.
It is asked to identify whether the given statement regarding the normal curve is true or false. The given statement is - "for a sample size of n = 26 and a population parameter of p = 0.6, a normal curve can be used to approximate the sampling distribution". The given statement is true.
Therefore, the statement : "for a sample size of n = 26 and a population parameter of p = 0.6, a normal curve can be used to approximate the sampling distribution" is true.
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Find the volume of each prism in page 428
Answers
Answer:
Umm why don't you write the question properly first?
Plz stop deleting my questions! This is a urgent!!plz help meee!,
Answers
Answer:
B
Step-by-step explanation:
Its really not hard. Just look at the chart. Find the 96 in the chart. What is it under? Flowers ordered. Which flower? Petunias. So its B. I'm sure you could have figured that out on your own. Not being rude, just telling you.
If Jamie had 12 pencils and she lost 9 what's the fraction left
Answers
Answer:
3/12
Step-by-step explanation:
Hope it helps plz give brainliest! :D
The volume of a cylinder is 1800cm. if the height of the cylinder is 40cm then the diameter of cylinder is?
Answers
Answer:
Step-by-step explanation: