Answer:
yes they form a proportion
Researchers claim that 90% of people are left handed. Suppose the researchers' claim is true. Mrs. Reyes has a Statistics class with 30 students. What is the probability that exactly 25 of them are left handed?
Answer:
10.23% to the nearest hundredth.
Step-by-step explanation:
This is a Binomial Probability Distribution.
If exactly 25 are left handed then exactly 5 are right handed.
So (probability that exactly 25 are left handed)
= 30C5*(0.1)^5(0.9)^25
= 0.1023047706
= 10.23%.
The probability that exactly 25 students out of 30 are left-handed, assuming the researchers' claim is true, is approximately 0.2031, or about 20.31%.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
Example:
The probability of getting a head in tossing a coin.
P(H) = 1/2
We have,
This problem involves the binomial probability distribution, where we have a fixed number of trials (30 students in this case), and each trial has two possible outcomes (left-handed or not left-handed).
The probability of success (a student being left-handed) is 0.9, based on the researchers' claim.
The probability of a failure (a student not being left-handed) is 1 - 0.9 = 0.1.
We want to find the probability that exactly 25 students out of 30 are left-handed.
This can be calculated using the binomial probability formula:
[tex]P(X = k) = ^nC_ kp^k (1 - p)^{n-k}[/tex]
where:
n = 30 (the number of trials)
k = 25 (the number of successes we want)
p = 0.9 (the probability of success in each trial)
Plugging in the values, we get:
[tex]P(X = 25) = ^{30}C_ {25}~ 0.9^{25} ~0.1^5[/tex]
Using a calculator or statistical software, we can find that:
P(X = 25) ≈ 0.2031
Therefore,
The probability that exactly 25 students out of 30 are left-handed, assuming the researchers' claim is true, is approximately 0.2031, or about 20.31%.
Learn more about probability here:
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Please help with this
Answer:
the value of ST is 2 of its x is 2
2(5 - 8x) -13 = 9(1 - x) -12
2 (5 - 8x) - 13 = 9 (1 - x) - 12
10 - 16x - 13 = 9 - 9x - 12
10 - 13 - 16x = 9 - 12 - 9x
- 3 - 16x = - 3 - 9x
- 3 + 3 = - 9x + 16x
0 = 7x
0/7 = x
0 = x
_____
Hope it helps ⚜
Answer:
x = 0Step-by-step explanation:
2(5 - 8x) - 13 = 9(1 - x) -12 => 10 - 16x - 13 = 9 - 9x - 12=> -3 - 16x = -3 - 9x=> 0 = 16x - 9x=> 0 = 7x => x = 0Conclusion:
Therefore, the answer is 'x = 0'
!! Hoped this helped !!
[tex]BrainiacUser1357[/tex]
Find the area of a trapezoid h= 4 b1= 1 1/2 b2 = 3 1/2
Answer:
10
Step-by-step explanation:
if
a= base 1 (1.5)
b= base 2 (3.5)
h= height (4)
[tex]A=\frac{a+b}{2}h=\frac{1.5+3.5}{2} 4[/tex]
(THE ULTIMATE QUESTION)solve one step equation (will also give Brainliest)
1. 3x = -18
2.x/4 = 16
3.-9x = 45
4.x + 8 = -10
5.-3x = -9
6.x/-2 = -3
Answer:
1 = --6
2 x=64
3 x= --5
4 x= --18
5 x=3
6 x=6
Step-by-step explanation:
GIMME BRANlIEST PLZZZ
what is the equation of the line that passes through the point negative -5, 7 and has a slope of -2/5
Answer: The equation of the line that passes through the point negative -5, 7 and has a slope of -2/5 is y = -0.4x + 5.
Ernie played 35 soccer games this season. He won 28 games. Enter the
percentage of games Ernie won.
Answer:
I think it;s 9.8
Step-by-step explanation:
You divide 35 and 28 i think
5. Put the decimals in order from least to greatest. 1.23, 1.023, 1.203, 1.032
Answer:
1.023,1.032,1.203, and 1.23
Step-by-step explanation:
What is Decrease 20g by 10% please?
Answer:
18
Step-by-step explanation:
What divided by 6 equals 0.41?
2.46
I think.
Because if you multiply 6 and 0.41 you get 2.46.
Answer:
2.46
Step-by-step explanation:
x/6=0.41
Multiply 6 on both sides and you get 2.46
how to solve 1/2x +8 = 7+ 1/2x
[tex]\frac{1}{2}x +8=7+\frac{1}{2}x <=>\frac{1}{2}x -\frac{1}{2}x =7-8<=>0x=-1[/tex] (no solution)
P/s: [tex]\frac{1}{2}x +8\neq 7+\frac{1}{2}x[/tex]
Ok done. Thank to me :>
what does 5/6 + (-4/9) (-2) equal
Answer:
HIya There!!!
________________________
To add fractions, find the LCD and then combine.
Exact Form:
31 /18
Decimal Form:
1.7 ¯ 2
Mixed Number Form:
1 13 /18
________________________
“Happiness resides not in possessions and not in gold, the feeling of happiness dwells in the soul.” – Democritus
________________________
Think of life as a mytery because well it sort of is! You don't know what may happen may be good or bad but be a little curious and get ready for whatever comes your way!! ~Ashlynn
The sum of 3 and m
A.x-3
B.1/2y
C.3+m
D.14+3x
E.x+5
F.14+4x
Answer:
C
Step-by-step explanation:
Answer:
the answer is C
Step-by-step explanation:
first of all thank you for reading this
it's addition which 3 + m
If 15 out of 25 students are boys,what percent of the class is made up of boys?
Answer: 6%
Step-by-step explanation:
Why is the addition or subtraction of k to the output of a function considered a translation?
Answer:
k translates a function up or down
Step-by-step explanation:
hope this helped :)
The number of feet in an unknown
number of yards. Let b = the variable.
Algebraic expression:
There are 3feet in one yard.
Let B = number of feet
Let Y = number of yards
B = 3Y
4,268 ÷ 2 = n.
Find n.
A. 1,324
B. 1,234
C. 2,134
D. 2,314
Answer:
C.2,134
Step-by-step explanation:
4÷2=2
2÷2=1
6÷2=3
8÷2=4
Answer:
C
Step-by-step explanation:
Had that same question and I just guessed and got it right
The length of a rectangular hall exceeds its breadth by 7 m. If the breadth is decreased by 1 m and the length increased by 2 m, the area remains the same. Find the length and breadth of the hall.
Answer:
Step-by-step explanation:
Let the length be :x+7
Let the breadth be:x
After addition and subtraction
Length:x+7+2=x+9
Breadth:x-1
A.T.Q
x(x+7) = (x+9)(x-1)
x²+7x = x(x-1)+9(x-1)
x²+7x = x²-x+9x-9
x²+7x-x²+8x = 9
8x-7x = 9
So, Breadth: 9m
So, Length :16m
Which of the following could be used to solve the triangle below?
Answer:
sine
Step-by-step explanation:
The difference between two numbers is 56. Five times the smaller is equal to 4 more than the larger. What are the numbers?
Can ya'll help- none of the answers i've gotten match any answers-
Answer:
1 8/11
Step-by-step explanation:
Using a calculator you can determine this information easily. I recommend doing so.
the answer is
1 and 8/11
explanation
which one is a function quick
Answer: Neither are functions, so option D
On both tables, one of the inputs has 2 outputs, so no function
One triangle weighs how much
Answer:
13
Step-by-step explanation:
Calculate the average of the numbers shown22,48,11 ,34,5
Answer:24
Step-by-step explanation:
22+48+11+34+5=120
120/5=24
Determine the sign of the leading coefficient
Answer:
negative
Step-by-step explanation:
The graph falls to both the left and right, so the leading coefficient has to be negative, and it must be raised to an even power.
If you have a book to read that is 20 pages, and you have read 15% of the book, how many pages as you read?
Answer:
you would of read 3 pages
Step-by-step explanation:
which statement describes the solution to the system of equations?
Answer:
The solution is (3, 5).
Step-by-step explanation:
The solution to a system of equations is a point that satisfies both equations - that is, a point that you can input to both equations that makes both of them true. On a graph, you can find this solution by searching for the place where the lines intersect.
In this case, it looks like the lines intersect at the point (3, 5), so this is our final answer. Hopefully that's helpful! :)
The solution is (3, 5), this statement describes the solution to the system of equations.
Option B is correct.
Here, we have,
The statement that describes the solution to the system of equations where two lines intersecting at (3, 5) is:
"The point of intersection of the two lines is (3, 5)."
When two lines intersect at a single point, that point is the solution to the system of equations.
In this case, the coordinates (3, 5) represent the x and y values where the two lines cross each other.
This means that both equations are satisfied when x = 3 and y = 5.
The solution to a system of equations is a point that satisfies both equations - that is, a point that you can input to both equations that makes both of them true.
On a graph, you can find this solution by searching for the place where the lines intersect.
"The point of intersection of the two lines is (3, 5)."
Option B is correct.
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a sweater was on 20% discount. the amount of discount was $7 what was the original price?
Answer:
$35
Step-by-step explanation:
if $7 is only 20% of the original price multiply 7×5
-20%×5=100%
same thing as 7×5=35
just switch the percent by its worth
please help me asap, i suck at math tbh :)
ty!
Answer:
Y intercept = (0,-6)
X intercept = (9,0)
Step-by-step explanation:
To find the y-intercept of an equation, let x = 0 and then solve for y
6(0) - 9y = 54 (6 times 0 gives us 0)
0 - 9y = 54 (subtract 9y from 0 gives you -9)
-9y = 54 (divide both sides by -9, the left side cancels out and the right side gives you -6)
y = -6 and x = 0
To find the x-intercept of the equation just let y = 0 and then solve for x
6x - 9(0) = 54 (9 times 0 gives us 0)
6x - 0 = 54 (subtract 0 from 6x gives us 6x)
6x = 54 (divide both sides by 6, left side cancels, right side gives 9)
x = 9 and y = 0
Solve for h. (h − 8)(h + 2) = 0
Answer:
donwload the gautmaht this is very powerful calculator to math problems
Step-by-step explanation:
make this is helpful too you