Answer:
P(0.8< p ^ <0.9)≈0.87
Step-by-step explanation:
trust me
The probability that the administrator's results are within 5 percentage points of the school board's 85% claim is approximately 0.919.
What is probability?Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.
To find the probability that the administrator's results are within 5 percentage points of the school board's 85% claim, we need to find the probability that the sample proportion of families sending their children to public school is between 80% and 90%.
We can use the normal approximation to the binomial distribution to calculate this probability. Since the sample size is large (n = 120) and the population proportion is not too close to 0 or 1 (p = 0.85), we can use the normal approximation.
The mean of the sampling distribution is the population proportion, which is 0.85 in this case. The standard deviation of the sampling distribution is given by the formula:
SD = √((p × (1 - p)) / n)
Plugging in the values, we get:
SD = √((0.85 (1 - 0.85)) / 120)
= √(0.01225 / 120)
= √(0.0001010417)
= 0.0101
Now we can use the normal distribution calculator to find the probability that the sample proportion is between 0.80 and 0.90. Plugging in the mean (0.85) and standard deviation (0.0101) and the upper and lower limits (0.80 and 0.90), we get a probability of 0.919.
Therefore, the required probability is approximately 0.919.
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Find the product (2y - 6)^2
The product (2y - 6)² of the algebraic expression gives 4y² - 24y + 36
How to find the product (2y - 6)²?An algebraic expression is an expression that is made up of variables and constants, along with algebraic operations like addition, subtraction, square root, etc.
The product (2y - 6)² can be written as:
(2y - 6)² = (2y - 6)(2y - 6) (clear the parenthesis)
= 2y(2y - 6) -6(2y - 6)
= 4y² - 12y - 12y + 36
= 4y² - 24y + 36
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Find the exact value of x.
x=
Answer:
6.73
Step-by-step explanation:
Remark
There might be an easier way to do this problem. I'm certain I don't know what it is. Begin by called WY = y
Givens
WY = y
WZ = x
XW = 25 - y
XZ = 24
YZ = 7
Equations
x^2 + y^2 = 7^2
(25 - y)^2 + x^2 = 24^2
Solution
x^2 = 7^2 - y^2
x^2 = 24^2 - (25 - y)^2
Since both xs are the same, you can equate the right side of the equations.
7^2 - y^2 = 24^2 - (25 - y)^2 Expand the brackets
7^2 - y^2 = 24^2 - (625 - 50y + y^2) Remove the brackets.
7^2 - y^2 = 576 - 625 + 50y - y^2 Cancel the y^2. Combine 576 and 625
49 = - 49 + 50y Add 49 to both sides
98 = 50y Divide by 50
y = 1.96
Now use y to find x
x^2 + y^2 = 7^2
x^2 = 7^2 - 1.96^2
x^2 = 45.1584
x = 6.72
9514 1404 393
Answer:
x = 6.72
Step-by-step explanation:
The triangles are all similar, so the ratios of corresponding sides are the same.
short leg/hypotenuse = 7/25 = x/24
x = 24(7/25)
x = 6.72
how do i put 6x5 in repeated addtion
Answer:
6+6+6+6+6
Step-by-step explanation:
6+6 5 times
6+6+6+6+6
1 2 3 4 5
Answer:
6+6+6+6+6 or 5+5+5+5+5+5
Step-by-step explanation:
Repeated addition just means to add 6, 5 times for this question.
The axis of symmetry for a function in the form f(x)=x2+4x-5 is x=-2
Answer:
error siya bessssss
error siya
A chemist measures the boiling point of a sample of benzene as 79.8 degrees Celsius. The actual boiling point is 80.1 degree Celsius. Round to the nearest hundredth of a percent, what is the percent error in the boiling point for the sample? Put the % sing after your numbers and do not put spaces in your answer.
Answer:
-0.375%
Step-by-step explanation:
Here, we want to calculate the percentage error
Mathematically;
% error = error/true value * 100%
error= the difference between the true value and the calculated
That is;
79.8-80.1 = -0.3
% error = -0.3/80.1 * 100%
% error = -0.375%
solve
plz -4p-2r-15p
Answer:
-2r-19p
Step-by-step explanation:
-4p-2r-15p
add like terms
-2r-19p
Justin is evaluating the expression 12.53.8x, when x is 7.9.
12.5+3.847.9)
16.3(7.9)
128.77
What was Justin's error?
Justin should have multiplied 12.5 and 7.9 first.
Justin should have added 12.5 and 7.9 first.
Justin should have multiplied 3.8 and 7.9 first.
O Justin should have added 3.8 and 7.9 first.
Answer:
C.) Justin should have multiplie 3.8 and 7.9 first.
Step-by-step explanation:
To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.
PLZ HELP I WILL GIVE BRANLIEST
Myrna wants to know how many pairs of jeans middle school students own. She did not have time to ask all 257 middle school students, so she surveyed a random sample of 25 students. The results below display the number of pairs of jeans each surveyed student owns.
3, 4, 2, 1, 3, 1, 2, 4, 2, 3, 1, 2, 4, 2, 3, 2, 2, 6, 1, 1, 2, 4, 1, 1, 2
The mean of her data is 2.36 pairs of jeans. From the given data and the calculated mean, which inference could Myrna make?
A. All middle school students own jeans.
B. The average middle school student owns around two pairs of jeans.
C. Most seventh-grade students prefer cargo pants to jeans.
D. An average middle school student owns three or more jeans.
Answer: B-The average middle school student owns around two pairs of jeans.
Step-by-step explanation:
PLEASE HELP ILL GIVE BRAINLY
Answer:
b represents the outlier
Step-by-step explanation:
Answer:
I think its B its the outer line if not then sorry
Step-by-step explanation:
Dolores spent $ 13.00 of the $20.00 in her wallet. Which decimal represents the fraction of the $20.00 Dolores spent?
A. 0.35
B. 0.13
C. 0.07
D. 0.65
Answer:
In order to find the fraction of the 20 dollars that has been spent, we have to divide the amount spent by the total amount. So 0.65 is the fraction of 20 that is spent.
Step-by-step explanation:
If m∠12 = 123° and m∠6 = 76°, find each measure.
Answer:
m1 = 76
m2 = 47
m3 = 57
m4 = 57
m5 = 47
m6 = 76
m7 = 123
m8 = 57
m9 = 76
m10 = 104
m11 = 57
m12 = 123
m13 = 104
m14 = 76
(19 + 2) x 11 + 3 hhhh
Answer:
234
Step-by-step explanation:
8- (-7) = help ASAP
Answer: 15
Step-by-step explanation: have a great day!
The difference between a larger multiple of 4 and a smaller multiple of 4, is again a multiple of...
Answer:
4.
Hope that helps!
Step-by-step explanation:
6 is 2/3 of what number
Answer:
9
Step-by-step explanation:
Let that number be x whose 6 is two thirds. Now we need to find here the value of x .
So,
[tex]\underline{\boldsymbol{ According\ to \ the \ Question :- }}[/tex]
=> x × ⅔ = 6
=> x = 6*3/2
=> x = 9
Find the GCF:
95, 145
Answer: 5
Step-by-step explanation:
Find the prime factorization of both these numbers:
95 = 5 * 19
145 = 5 * 29
The largest common factor is 5
Solve the literal equation for y.
6x + 3y = 3
Answer:
6
Step-by-step explanation:
because 3x3=6
so y would have been 6 not sure if am correct but I'm trying something
Multiple Choice Questions (MCQs)
14. The ratio between two numbers is 11:9. If the
sum of these two numbers is 40, what is the
product of the numbers?
(a) 396
(c) 400
(b) 432
(d) 384
Answer:
(c) 400 is correct answer
Copeid from Sandy
Answer:
400 is the best answer
Step-by-step explanation:
For me
Copied from Alia !!
Kayden is a teacher and takes home 100 papers to grade over the weekend. He can grade at a rate of 6 papers per hour. How many papers would Kayden have remaining to grade after working for 10 hours?
Answer:
40
Step-by-step explanation:
6 * 10 = 60 papers done and complete
100- 60 = 40
Answer:
40 papers will be remaining
Step-by-step explanation:
= As,It take 1 hour to grade 6 papers
= 1 -6
= 10-?
= by cross multiplying we get 60 papers
= 100 - 60
= 40 papers
Thank you
Question 5 (25 points)
Choose the equation that could be used to solve for the missing side.
Help me ASAP!!!! Plzzz!!!
Answer:
Again its C like i answered before.
Step-by-step explanation:
Cos is adj/hyp and there is only one cos option so it must be correct.
If u know how to do this plz help cause I missed class and I don’t understand anything :/
Answer:
2
Step-by-step explanation:
sum of angles in a triangle is 180
(26x - 2) + 70 + 60 = 180
26x -2 = 180 - 70 - 60
26x - 2 = 50
26x = 52
x = 2
hope this helped
Answer:
D) 2
Step-by-step explanation: The interior angles of triangles will ALWAYS add up to 180 degrees. In this case 2 angles are already provided, 70 and 60, so adding those together (130) the remaining angle must be 50 (180-130=50). In 26x-2=50, x=2 is the only possible answer. (Feel free to ask any questions if you don't understand anything I said!)
HELP ME PLEASEE!!!!!!ITS DUE TODAY!!
Answer:
86.5, 52, -2.9, -11.6
Step-by-step explanation:
The intervals are same amounts on number 1 and 2, and for 3 and 4. But different than the other group
4x+2y=17
3x+2y=13
X=
Y=
Please help asap lol ty
Answer:
x=4
y= 1/2
Step-by-step explanation:
The easiest way to solve this is to subtract the two equation from each other
wee have
4x+2y=17
- 3x+2y=13
___________
x=4
Now that we know what x is we can solve for y
4(4)+2y=17
16+2y=17
2y=1
y= .5
plss help me i really need help plsss my school is amost done so plss help me
Answer:
cant really help since I cant draw it out, just count the numbers, for example if its (5,4) start from the middle and go 5 pointa to the right and 4 points up and mark it, if its (-5. -4) go 5 points left and 4 points down
16)
6 points
Bowling shoes cost $69.95 per pair. You need two-
new pairs of shoes. What is the better Incentive?
Buy one pair, get the second pair at half price
Or
2 palrs for $100.00
Buy one pair get the second at half price
O 2 pairs for $100
find the size of angle x
Answer:
X=180-124
X=56
Bpwxjpwxjwxwx
Answer:
56
Step-by-step explanation:
180 - 124 = 56
Help!! I’ll give brainliest! <3
Answer:
Step-by-step explanation:
1/2 x because it is always positive and gives half the value of x
Two friends shop for fresh fruit. elena buys a watermelon for $7.65 and 4 pounds of cherries. taniy buys a pineapple for $2.25 and 3 pounds of cherries. use the variable p to represent the price, in dollars, per pound of cherries.
Answer:Answer: 5.2-p
Step-by-step explanation:
Let p be the price, in dollars, per pound of cherries.
Given : .Jackson buys a watermelon for $7.65 and 5 pounds of cherries.
Cost of 5 pounds of cherries = 5p
Now,
Cost of fruits to Jackson = 7.65+5p (in dollars)
Tim buys a pineapple for $2.45 and 4 pounds of cherries.
Cost of 4 pounds of cherries = 4p
Now,
Cost of fruits to Tim = 2.45+4p (in dollars)
Amount spent by Jackson more than Tim = (Cost of fruits to Jackson)-(Cost of fruits to Tim)
= 7.65+5p -(2.45+4p)
= 7.65+5p -2.45 - 4p
= 5.2-p
Hence , the required expression in terms of p = "5.2-p"
Step-by-step explanation:
How much inches go into 5ft?
What is the perimeter of the parallelogram? 12 cm 6 cm 5 cm 7 cm
Answer:
12
Step-by-step explanation: