please help what is 4/8 divided by 4/20
Answer:
The correct answer is 2 and 1/2 or 5/2
The television landscape has changed as networks compete with streaming services such as Netflix and Amazon. Suppose that CBS plans to conduct interviews with television viewers in an attempt to estimate the proportion of viewers in the 18–49 age group who watch “most” of their television on network television as opposed to streaming services. CBS wishes to have 95% confidence and a margin of error in its estimate of ±0.03. What sample size is required?
Answer:
A sample size of 1068 is required.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
95% confidence level
So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].
CBS wishes to have 95% confidence and a margin of error in its estimate of ±0.03. What sample size is required?
We need a sample size of n, and is found when M = 0.03.
We dont have an estimate for the true proportion, so we use [tex]\pi = 0.5[/tex], which is when the largest sample size will be needed.
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.03 = 1.96\sqrt{\frac{0.5*0.5}{n}}[/tex]
[tex]0.03\sqrt{n} = 1.96*0.5[/tex]
[tex]\sqrt{n} = \frac{1.96*0.5}{0.03}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.96*0.5}{0.03})^2[/tex]
[tex]n = 1067.1[/tex]
Rounding up,
A sample size of 1068 is required.
PLEASE, SOMEONE, ANSWER THESE PLEASE THE ONE WITH THE CORRECT ANSWER WILL GET A LIKE AND THE CROWN BOTTON
Answer:
20,90 for the first one
50% for second one
simplify [tex]\sqrt{p^4q^6r^5. answer is D just took the test
Six trigonometric functions of -315.
which subjects are required to study law and what levels of the subjects are needed
14. circunferencia = 7.3 m (calcular
el radio ) *
Answer:
radius =1.1618m
Step-by-step explanation:
circumference of circle =7.3m
2πr=7.3
r=7.3/(2π)=1.1618m
Divide. 21,900 / 25. Enter the exact quotient
Help me
Answer:
107 %
3 %
100 /8
Step-by-step explanation:
The exact quotient is 876.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
21,900 / 25
Now,
Using long division,
25 ) 21,900 ( 876
200
190
175
150
150
0
We see that,
The quotient is 876.
Thus,
The exact quotient is 876.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ5
Find the perimeter of the figure.
Answer:
Well I’m not sure what you want but I’ll give you both,
The perimeter is 25 units
The area is 28.5 units ^2
Step-by-step explanation:
Well to find perimeter just count every unit which is what I did and got 25 units.
To find the area jsut split them into two shapes and find the area for both.
Triangle formula: bh/2
Rectangle: Lw
Well we have 3 for base and 3 for height.
3*3=9
9/2=4.5
4.5 is the triangle
We got 3 for width and 8 for length
3*8=24
24 is the rectangle
Add them up
24+4.5= 28.5
28.5 units
Answer:
28.5?
Step-by-step explanation:
I did this a while ago in 5th grade
3. A pharmacist needs a blend of chemical containing 35% of manganese but she has one vial
at 40% and another at 25%. How many of each must be mixed to provide 100 pounds of
35% manganese?
Hey please help i will mark you brainliest I need help honestly
I need help. what is 2e=2
Answer:
e=1
Step-by-step explanation:
2e=2
Divide both sides by 2
2e/2=2/2
Simplify
e=1
ANSWERED by NONE other than the #QUEEN herself aka #DRIPPQUEENMO!!
HOPE THIS HELPED!!
Use differentials to estimate the amount of material in a closed cylindrical can that is 60 cm high and 24 cm in diameter if the metal in the top and bottom is 0.1 cm thick, and the metal in the sides is 0.05 cm thick. Note, you are approximating the volume of metal which makes up the can (i.e. melt the can into a blob and measure its volume), not the volume it encloses. The differential for the volume is
Answer:
dV ≈ 927.4 cm³
Step-by-step explanation:
Formula for volume of a cylinder is;
V = πr²h
Using differentials, we have;
dV = (dV/dr)dr + (dV/dh)dh
Now, dV/dr = 2πrh
dV/dh = πr²
Thus, at r = 24/2 = 12 cm
And at h = 60 cm, we have;
dV/dr = 2π(12 × 60)
dV/dr = 4523.89 cm²
Also;
dV/dh = π(12)²
dV/dh = 452.39 cm²
the metal in the top and bottom is 0.1 cm thick. Thus, dr = 2 × 0.1 = 0.2
the metal in the sides is 0.05 cm thick. Thus; dh = 0.05
Thus;
dV = (4523.89 × 0.2) + (452.39 × 0.05)
dV ≈ 927.4 cm³
the difference between a two digit number and the number obtained by interchanging the position of its digit is 36 what is the difference between two digit of that number
Answer:
4
Step-by-step explanation:
Let 10x+y be the two digit number. y is the one's digit and x is the ten's digit.
Interchanging the digits gives the new number 10y+x.
We are given when we subtract these numbers we get 36.
(10x+y)-(10y+x)=36
Put like terms together
Remember the terms in the second are being subtracted from the terms in the first
(10x-x)+(y-10y)=36
9x-9y=36
Dividing both sides by 9 gives
x-y=4
The difference between the numbers is 4.
6p + 4 / 7 + 5p - 6 / 2 - 3p / 4 when p = 4
Step-by-step explanation:
Given p = 4,
substitute p= 4 into the expression
6p+4/7+5p-6/2-3p/4
[tex]6(4) + \frac{4}{7} + 5(4) - \frac{6}{2} - \frac{3(4)}{4} \\ = 24 + \frac{4}{7} + 20 - 3 - 3 \\ = 44 + \frac{4}{7} - 3 - 3 \\ = 38 + \frac{4}{7} \\ = 38 \frac{4}{7} [/tex]
Mike wants to join a gym. He has to pay an initiation fee of $16 and equal monthly payments for the year. The most he wants to pay is $580 for the year for his gym membership. a.) Write an inequality that you can use to determine the most he would want to spend for his monthly payments. *
Answer:
16+x*12≤580
Step-by-step explanation:
x would be the money you pay per month
Can I have brainliest plz
Hope dis helps :P
Answer:
16+x*12≤580
Step-by-step explanation:
Find the value of x
Answer:
x=13
Step-by-step explanation:
Since both angles are vertical angles and are therefore congruent, the expression is equal to 114.
7x+23=114
Subtract 23 from both sides.
7x=91
Divide both sides by 7.
x=13
3601-589= What strategy did you use?
Answer:
3601
-589
———-
To
359(11)
-589
———-
3012
Step-by-step explanation:
In a sample of 800 adults, 218 think that most celebrities are good role models. Two adults are selected from this sample without replacement. Find the probability that neither adult think celebrities are good role models
Answer:
582/800 * 581/799
brr i do NOT want to calculate that
The ———— is used to determine the left-hand and right-hand behavior of the graph of a polynomial function.
--Select-
Behavior Test
t Answ Polynomial Test
Odd Degree Test
Horizontal Line Test
Leading Coefficient Test
Dints] Distinct Zero Test
Even Degree Test
Vertical Line Test
AT10 3.2.001.
Answer:
I think it is the vertical line test. If you have any other questions let me know! :)
I buy a 5 kg jar of sweets for £25. Then i divide the sweets into 125g packets and sell them for 99p each
Answer:
is that the whole question? it looks unfinished to me-
Value Added Tax (VAT)
15% VAT is payable on all goods and services, except for sanitary pads, fresh
produce and a few other staple food items. We will assume that 1.0% of goods
bought by this family, are non-VAT items.
The net salary of the Zulu household after all deductions (tax, home loan,
pension, medical, UIF etc), is R17 889 pm.
If they, on average, spend R14 850 of this on VAT items such as food, petrol,
clothing, cell phones, TV, entertainment etc, then;
2.1. calculate the tax amount they pay in the form of VAT.
(3)
[3]
The proportion of U.S. births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control and Prevention (CDC). A local hospital randomly selects five births and lets the random variable X count the number not resulting in a defect. Assume the births are independent. If 500 births were observed rather than only 5, what is the approximate probability that at least 490 do not result in birth defects
Answer:
Probability that at least 490 do not result in birth defects = 0.1076
Step-by-step explanation:
Given - The proportion of U.S. births that result in a birth defect is approximately 1/33 according to the Centers for Disease Control and Prevention (CDC). A local hospital randomly selects five births and lets the random variable X count the number not resulting in a defect. Assume the births are independent.
To find - If 500 births were observed rather than only 5, what is the approximate probability that at least 490 do not result in birth defects
Proof -
Given that,
P(birth that result in a birth defect) = 1/33
P(birth that not result in a birth defect) = 1 - 1/33 = 32/33
Now,
Given that, n = 500
X = Number of birth that does not result in birth defects
Now,
P(X ≥ 490) = [tex]\sum\limits^{500}_{x=490} {^{500} C_{x} } (\frac{32}{33} )^{x} (\frac{1}{33} )^{500-x}[/tex]
= [tex]{^{500} C_{490} } (\frac{32}{33} )^{490} (\frac{1}{33} )^{500-490}[/tex] + .......+ [tex]{^{500} C_{500} } (\frac{32}{33} )^{500} (\frac{1}{33} )^{500-500}[/tex]
= 0.04541 + ......+0.0000002079
= 0.1076
⇒Probability that at least 490 do not result in birth defects = 0.1076
Combine the like terms to create an equivalent expression
−5j+(−2j)+3
Answer: -7j+3
Step-by-step explanation:Simplify
can someone help me please
Answer:
Step-by-step explanation:
Answer:
The correct answer is B. $6.50 per pound.
What is angle LKM? I need help right away please!!
Answer:
Angle LKM is 110
Step-by-step explanation:
Since all the angles in a triangle equal 180, and 60 is one angle you can see its an equilaterial triangle.
so x=60
Then 3(60)-70=110
So LKM=110
Answer:
125, i don't know if I'm right though so try it? :)
Step-by-step explanation:
Well an exterior angle of a triangle is equal to the sum of the two opposite interior angles. The sum of exterior angle and interior angle is equal to 180 degrees
180-60=120
120=x+(180-(3x-70))
x=65
3*65=195
195-70=125
QUESTION 8. An unknown number is added to 8. The sum is
then divided by 9 to give the answer 10. What is the unknown
number?
Answer:
82
Step-by-step explanation:
Let the unknown number be x
If an unknown number is added to 8, this is expressed as;
8 + x
If The sum is then divided by 9 to give the answer 10, then;
(8+x)/9 = 10
Cross multiply
8 + x = 9 * 10
8 + x = 90
x = 90 - 8
x = 82
Hence the unknown number is 82
The following is the estimation results for a multiple linear regression model:
Y = B. + ,X,+B,X, +E
SUMMARY OUTPUT
Regression Statistics
R-Square 0.558
Regression Standard Error (S) 863.100
Observations 35
Coeff StdError t-stat
Intercept 1283.000 352.000 3.65
X1 25.228 8.631
X2 0.861 0.372
Questions:
1. Write the fitted regression equation (30 points).
2. Write the estimated intercepts and slopes, associated with their corresponding standard errors (30 points).
3. Interpret each coefficient (40 points).
Answer:
Kindly check explanation
Step-by-step explanation:
Given the summary output :
_______ Coeff___ StdError__ t-stat
Intercept 1283.000_ 352.000 _ 3.65
X1 _____ 25.228 ____8.631
X2 _____0.861 _____0.372
General form of a multiple regression model:
Y = B1X1+B2X2 +E
The fitted regression equation is :
y = 25.228X1 + 0.861X2 + 1283
Intercept and slope corresponding to the standard error :
Intercept = 352
Slope 1 = 8.61 ; slope 2 = 0.372
'B' coefficient represents the change in the mean response, Y, per unit increase in a version predictor variable when all the other predictors are held constant.
B1 represents the change in the mean response, U, per unit increase in x1 when x2, x3, ..., xk are held constant
B2 represents the change in the mean response, U, per unit increase in x2 when x1, x3, ..., xk are held constant
write the equation of the line passing through -1,3 that is parallel to y=4x-7 AND. write the equation of the line (y=-1/4x+9) passing through the given point (3,-7) that is perpendicular to the given line
Answer:
I hope that helped
Step-by-step explanation:
3x+4y=-5
6x+2y=8
7x+y=0
4x-5+y=0
On one street in Samtredia, where the houses are numbered one after the other, live Yuza, Glonti and Ramin. There are three times as many houses between Yuza and Glonti as there are between Glonti and Ramin. Ramin's house number is three times Yuza's house number. What a house the Glonts live in
If there are exactly 13 houses between Yuza and Ramin's houses. A) 12; 8) 13; a) 14; D) 15; a) 16; 3) 17.
Answer:
17Explanation:
if ramin's house number = 3 yuza's
then choices are: n×3
1 , 3 | 2 , 6 | 3 , 9 | 4 , 12 | 5 , 13 | 6 , 18 | 7 , 21
since there are 13 house between yuza and ramin
thus it's 7 , 21 (because there's 13 numbers between 7 and 21)
yuza lives in house 7
ramin live in house 21
and since houses between yuza and glonti = 3 times houses between glonti and ramin, with a ratio of 3:1
13 - 1 = 12 (we subtracted 1 for glonti's house)
3:1 , 3+1=4
12/4=3
3×3=9
hence
9 and 3 are the numbers of houses in each side with glonti in the middle
9 houses - glonti's house - 3 houses
7 + 9 = 16 (yuza's house number 7 plus 9 houses ahead)
glonti lives in the house: 16 + 1 = 17