Answer:
f.[157]
Step-by-step explanation:
set A consists of odd numbers and choise F also consists of odd numbers
we are not going for choise A because 2and4are even numbers choise E is a repetition
The options D. { } and F. {1, 5, 7} are the proper subsets of set A={1, 3, 5, 7, 9}.
To determine which sets are proper subsets of set A={1, 3, 5, 7, 9}, we need to understand the definition of a proper subset. A proper subset of a set A is a subset that contains fewer elements than A but is not equal to A.
Let's evaluate each option:
A. {1, 2, 3, 4}
This set is not a proper subset of A because it contains the element 2, which is not in A.
B. {9}
This set is not a proper subset of A because it is equal to A. A proper subset should have fewer elements than the original set.
C. {2, 4, 6, 8}
This set is not a proper subset of A because it does not have any elements in common with A.
D. { }
This set is a proper subset of A since it contains no elements, and it is always a subset of any set, including A.
E. {1, 3, 5, 7, 9}
This set is not a proper subset of A because it is equal to A, and we are looking for subsets with fewer elements.
F. {1, 5, 7}
This set is a proper subset of A since it contains fewer elements than A but is not equal to A.
Correct answers:
D. { }
F. {1, 5, 7}
So, options D and F are the proper subsets of set A={1, 3, 5, 7, 9}.
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You buy the following from Amazon:
25 flash drives for $10 each
What is the Subtotal: $
Today only they are 25% off, how much do you save: $
What is the new Subtotal: $
Sales tax is 4%: $
I
What is the total: $
Answer:
Subtotal: $250.00
Savings: $62.50
New Subtotal: $187.50
Total: $195.00
Step-by-step explanation: First, multiply 25 by 10. You'd get 250. Then, recall the formula to find the worth after a percent is applied:
Worth = Whole number * part percent / 100
Plug in the numbers:
Worth = 250 * 25 / 100
6250 / 100
= 62.50
Now, since it's a discount we need to subtract the discount price from the current subtotal. This would look like this:
250 - 62.50 = 187.50
Now, use the same formula to find the sales tax:
187.50 * 4 /100
750 / 100
= 7.5
So, since we need to pay the tax, we add the amount to our current subtotal:
187.50 + 7.5 = 195
So, our total is $195.00
Maria had $150 in gift certificates to use at a record store. She bought no more than 20 recordings. Each tape cost $5.95 and each CD cost $8.95. How many of each type of recording might she have bought?
Maria might have bought 9 tapes and 10 CDs of each type with her gift
certificate.
What are inequalities and their types?Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.
The symbol a < b indicates that a is smaller than b.
When a > b is used, it indicates that a is bigger than b.
a is less than or equal to b when a notation like a ≤ b.
a is bigger or equal value of an is indicated by the notation a ≥ b.
Let,The no. of tapes be 'x' and the no. of CD be 'y'.
Given, She bought no more than 20 recordings.
Therefore, x + y ≤ 20.
And,
Each tape cost $5.95 and each CD cost $8.95.
Therefore,
5.85x + 8.95y ≤ 150.
By graph intersection method we find that (9.355, 10.645) is a solution.
But the numbers should be in integers so, 9 tapes and 10 CD recordings
she might have bought.
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Is this a function or not a function?
answer:
if because x does not have two y
Step-by-step explanation:
I hope it works
What’s the surface area of this prism ?
Hence the required surface area is 228cm²
What is surface area?
The surface area is the area occupied by a two-dimensional flat surface. It has a square unit of measurement. The surface area of a three-dimensional object is the space taken up by its outer surface. Square units are used to measure it as well.
Given:
A triangular prism and its net.
To find:
Side lengths for the net.
Surface area of the triangular prism.
Solution:
Side lengths for the net:
A= 4 cm
B= 10 cm
C= 6 cm
D= 8 cm
Surface area:
[tex]sa = bh +(b1 +b2+b3)l\\\\sa=6(8) +(6+4+8)\times10\\\\sa= 48 +18(10)\\\\sa=48+180\\\\sa=228 cm^2[/tex]
Hence the required surface area is 228cm²
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While looking at some reports, a
store manager notes that gold
rings that retail for $688 end up
costing customers $731 once the
sales tax is added. What is the
sales tax percentage?
(round your answer to the nearest hundreths)
6.25% is the the sales tax.
What is Percentage?Percentage, a relative value indicating hundredth parts of any quantity.
Given that a store manager notes that gold rings that retail for $688 end up
costing customers $731 once the sales tax is added.
We need to find the sales tax percentage.
The percentage we can calculate by subtracting original amount minus new amount by original amount and multiplied with 100.
731-688/688
0.0625
Multiply 0.0625 with 100 as it is a hundredth part.
0.0625×100
6.25%
Hence, the sales tax percentage is 6.25%.
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Please help me respond this question
Check the picture below.
Answer:
14.1
Step-by-step explanation:
You add all of your numbers up, and then you divide by how many numbers you have.
A cylinder has a radius of 14 m and a height of 6 m. what is the exact volume of the cylinder? responses 84π m³ 84 pi, m³ 168π m³ 168 pi, m³ 504π m³ 504 pi, m³ 1176π m³
Answer:
answer is on the photo......
Find the sum of the first 20 terms of the sequence below.
27, - 9, + 3, - 1, ...
The sum of the first 20 terms of the geometric sequence is 20.25.
What is a geometric sequence?A geometric sequence is a sequence of numbers in which the ratio between consecutive terms is constant.
Example:
2, 4, 8, 16, 32 is a geometric sequence.
We have,
27, -9, 3, -1,.....
a = 27
Common ratio:
= -9/27 = -1/3
= 3/-9 = -1/3
The sum of the geometric sequence.
S(n) = a (1 - [tex]r^n[/tex]) / (1 - r)
Now,
a = 27,
r = -1/3
S(20):
= 27 (1 - [tex](-1/3)^{20}[/tex]) / (1 + 1/3)
= 27 (1 + 1/[tex]3^{20}[/tex]) / (4/3)
[ (1 + 1/[tex]3^{20}[/tex]) = 1 ]
= 27 x 3/4 x 1
= 20.25
Thus,
The sum of the geometric sequence is 20.25.
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The point-lope form of the equation of the line that pae through (–4, –3) and (12, 1) i y – 1 = y-1=1/4(x – 12). What i the tandard form of the equation for thi line?
An equation of line having slope 1/4 and passes through the point (-4,-3) is y = 1/4x - 2
We know that the slope-point form of line is:
(y - y1) = m(x - x1)
Here, we need to find an equation of line having slope 1/4 and passes pae through the point (-4,-3)
let (x1, y1) = (-4, -3)
and m = 1/4
substitute values in above formula,
(y - (-3)) = 1/4 (x +4)
y + 3 = 1/4 (x+4)
y = 1/4x -2
which is slope-intercept form of line (y = mx + b)
Therefore, equation of line is y = 1/4x - 2
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Given that the measurement is in inches find the circumference of the circle to the nearest tenth use 3.14 for. Please show ur work Bc I have too !!
Answer:
25.12 in.
Step-by-step explanation:
C = 2πd
C = 2 × 3.14 × 4 in.
C = 25.12 in.
mr. yates picked up a dozen items in the grocery store with a mean cost of $3.25. then he added an apple pie for $6.50. the new mean for all 13 items is
The new mean cost for all 13 items purchased by Mr. Yates is found to be $3.50.
Explain the term mean value of the data?The mean of a dataset seems to be the sum of all numbers divided by a total number of values, also known as the arithmetic mean, which differs from the geometric mean. The term "average" is frequently used to describe this measure of central tendency.The given data is-
mean cost = $3.25
Number of items = 12.
When added with apple pie of $6.50.
Total number of items becomes = 13.
So,
New mean = 6.50x12 + 3.25 / 13
New mean = 3.50
Thus, the new mean for all 13 items purchased by Mr. Yates is found to be $3.50.
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two students are chosen at random from a group of two girls and five boys, all of different ages. find the probability
From a group of two girls and five boys, all of the various ages, two pupils are randomly selected. The likelihood that the two selected students will be boys is 10/21.
In probability theory and other branches of mathematics, the term "combination" designates a series of results in which the order of the results is irrelevant.
Here given the total number of girls is 2 and boys is 5. Then, the total number of students is 7. The number of ways of selecting 2 students from 7 students is,
[tex]\begin{aligned}n(S)&=\frac{7C2}{2}\\&= \frac{7\times6}{2}\\&=\text{21 ways}\end{aligned}[/tex]
The number of ways of selecting 2 boys from 5 boys is,
[tex]\begin{aligned}n(E)&=\frac{5C2}{2}\\&=\frac{5\times4}{2}\\&=\text{10 ways}\end{aligned}[/tex]
Then, the required probability is calculated as,
[tex]\begin{aligned}P(E)&=\frac{n(E)}{n(S)}\\&=\frac{10}{21}\end{aligned}[/tex]
Therefore, the required answer is 10/21.
The complete question is -
Two students are chosen at random from a group of two girls and five boys, all of the different ages. Find the probability that the two students chosen will be: two boys
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Write
38
46
in lowest terms.
The lowest term of 38/46 can be expressed as a decimal as 0.826087 and percentage as 82.6087%.
How to estimate the lowest term of 38/46?The fraction 38/46 is equivalent to 19/23.
Once the absolute value of the top number, or numerator, (38) is less than the absolute value of the bottom number, or denominator, the fraction is considered to be correct (46).
The fraction 38/46 can be reduced.
To make things simpler, we'll employ the Greatest Common Factor (GCF) technique.
The GCF is the largest number equally divisible by two or more other numbers.
The numerator and denominator factors are listed, and the greatest number repeated in both lists is used to calculate the GCF:
The factors of 38 exists 1,2,19,38;
The factors of 46 exists 1,2,23,46.
We can see that the GCD is 2 because it is the largest number by which 38 y 46 can be divided without leaving any residue.
Simply divide the numerator and denominator by 2 to lower this fraction (the GCF).
So, [tex]$\frac{38}{46}=\frac{38 \div 2}{46 \div 2}=\frac{19}{23}$[/tex]
Therefore, 38/46 exists equivalent to 19/23 in the reduced form.
The factors exists numbers that multiply each other to get another number.
The fraction 38/46 exists even equivalent to 38÷46 and can also be expressed as a decimal as 0.826087 and expressed as a percentage as 82.6087%.
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Complete the equation for a line through point A(-3, 3) and perpendicular to the line passing through (0, -2) and (4, 1).
Answer: Zeli shan tel
Step-by-step explanation:
Tyler’ firt and correct equation : 0. 65p 0. 10t = 1. 70
Tyler’ econd and incorrect equation: t =(1. 70. 0. 65p). 0. 10
This equation is incorrect because it is missing a division sign between 1.7 and 0.65p. The correct equation should be t = (1.7 / 0.65p) * 0.10
First, we need to isolate the variable 't' in the equation. To do this, we need to divide both sides of the equation by 0.10. This will give us 0.65p/0.10 = 1.70/0.10, which simplifies to t = (1.7 / 0.65p) * 0.10. This is the correct equation that we need to solve for 't'.
t = (1.7 / 0.65p) * 0.10
t = (1.7 / (0.65 * p)) * 0.10
t = (17 / (6.5 * p)) * 0.1
t = (17 * 0.1) / (6.5 * p)
t = (1.7) / (6.5 * p)
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Write an equation to model the situation:
Tyler withdraws $35 from his bank account every week until he runs out of
money. He started the year with $3245 in his bank account.
In his account balance now $3215
What is the explanation?Tyler withdraws $35 from his bank account every week until he runs out of
money. He started the year with $3245 in his bank account.
Tyler withdraws $35.
He started with $3245.
In his account balance now
Tyler withdraws -His started accound.
$3245 - $35 = $3215
Till he runs out of money, Tyler takes out $35 per week from his bank account. He had $3245 in his bank account before the year began.Tyler takes out $35.He had $3245 to start.Tyler is now making withdrawals from his beginning account amount. $3245 - $35 = $3215Currently, he has $3215 in his account.
In his account balance now $3215
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In 2014 , a salesman was paid a basic monthly salary of rs 25 000. At the end of the year ,he was also paid a bonus of 6.5 % of the value of the sales that he had made during the year . his sales for the year was rs 100 000. calculate his totasl income that he receives in 2014.
x as his total income
x = 12(25 000) + 0.065(100 000)
x = 300 000 + 6 500
x = 306 500
CHECKING:
12(25 000) = 300 000 (12 months salary)
0.065(100 000) = 6 500 (bonus)
= 306 500
Therefore, the salesman total income is 306 500 in 2014.
Step-by-step explanation:
heart and star pls <3 brainliest will be appreciated <3(っ◔◡◔)っ -{ elyna s }-A boa constrictor slithers 2/6 kilometers in 4/5 hours. What is the distance the boa constrictor travels in 16 hours?
10 kilometres
Explanation
1/3 + 4/5 = 5/8
5÷8 = 0.625
0.625 * 16 = 10
in a triangle abc AB=12, AC=14 and angle BAC=68° find angles and side
Answer: The measures of the angles in triangle ABC are BAC = 68°, BCA = 50.6°, and ABC = 61.4°. The lengths of the sides are AB = 12, AC = 14, and BC = 13.68.
Step-by-step explanation:
To find the angles and sides of a triangle, you need to know at least three pieces of information about the triangle. In this case, you are given the lengths of sides AB and AC, and the measure of angle BAC.
You can use the Law of Sines to find the measure of the third angle and the length of the third side. The Law of Sines states that for any triangle, the ratio of the length of a side to the sine of the angle opposite that side is the same for all sides and angles in the triangle. In other words, if we let a, b, and c represent the lengths of the sides of the triangle and A, B, and C represent the measures of the angles opposite those sides, then the following equation holds:
a/sin A = b/sin B = c/sin C
In triangle ABC, we are given the lengths of sides AB and AC and the measure of angle BAC. We can use the Law of Sines to find the measure of angle BCA and the length of side BC.
First, we can find the measure of angle BCA using the equation:
a/sin A = b/sin B = c/sin C
Substituting the known values, we get:
14/sin BAC = 12/sin BCA
Solving for sin BCA, we get:
sin BCA = 14/12 * sin BAC
Plugging in the given value for sin BAC, we get:
sin BCA = 14/12 * sin 68°
Using a calculator, we find that sin 68° = 0.906308
So sin BCA = 0.763696
To find the measure of angle BCA, we can use the inverse sine function on our calculator. The inverse sine of 0.763696 is about 50.6°.
Now that we know the measures of angles BAC and BCA, we can use the fact that the angles in a triangle sum to 180° to find the measure of angle ABC:
BAC + BCA + ABC = 180°
Substituting the known values, we get:
68° + 50.6° + ABC = 180°
Solving for ABC, we get:
ABC = 180° - 68° - 50.6°
This simplifies to:
ABC = 61.4°
Now that we have found the measures of all three angles, we can use the Law of Sines again to find the length of side BC.
We can use the equation:
a/sin A = b/sin B = c/sin C
Substituting the known values, we get:
14/sin BAC = 12/sin BCA = BC/sin ABC
Solving for BC, we get:
BC = 14/sin BAC * sin ABC
Plugging in the values we found earlier, we get:
BC = 14/0.906308 * sin 61.4°
Using a calculator, we find that sin 61.4° = 0.875
So BC = 14/0.906308 * 0.875 = 13.68
The measures of the angles in triangle ABC are BAC = 68°, BCA = 50.6°, and ABC = 61.4°. The lengths of the sides are AB = 12, AC = 14, and BC = 13.68.
Complete the statements. Explain.
Question 1
Part A
Enter the correct answers in the boxes.
−4(5+(−2))= (
) (5)+ (
)(−2)
−4 (
) =−20+
The numerical expression is -4(5+(-2)) by solving we get -12 is the number with a negative term.
Given that,
The expression is -4(5+(-2))
We have to find what is the solution for the given numerical expression.
We know that,
Mathematical statements called expressions must contain a minimum of two terms with either numbers, variables, or both, joined by an operator. Addition, subtraction, multiplication, and division are all possible mathematical operations.
Take the numerical expression
-4(5+(-2))
Adding 5+(-2)
Multiply + - we get -
So,
5-2=3
-4(5-2)=-4(3)
Multiply 4 to 3
-4(3)=-12
Therefore, The numerical expression is -4(5+(-2)) by solving we get -12 is the number with a negative term.
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Use the image below to answer the identify the following. Please show ur work Bc I have too !!
One pair of vertical angles
One pair of adjacent angles
One pair of supplementary angles
∠1 and ∠4 are vertical angles
∠1 and ∠3 are adjacent angles
∠1 and ∠2 are supplementary angles
Vertical Angles:Vertically opposing angles are established when two lines intersect at a single place and the angles opposite to each other are created using the two intersecting lines. There is never a difference between these angles.
Adjacent Angles:Those angles are referred to as vertical angles if they share an arm and a vertex. Additionally, the nearby angles are those that are produced side by side. The primary characteristic of these angles is that they never cross over.
Supplementary Angles:When two angles add up to 180 degrees, they are said to be supplementary. Angles are referred to be supplementary angles when two of them are next to one another.
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helpppppppppppppppppppppppppppppppppppppppppppppppp asap
Answer: It should be 3rd onem 3/4n=5/8
Step-by-step explanation: if not my bad-
Please help!! And explain the work you did!! 60 points and brainliest!
3x²-12x+27= 0
Distinguish the discriminant and number of solutions for the equation. Show your work and explain the steps you
used to solve.
Each marble bag sold by Ahmad's Marble Company contains 5 green marbles for every 8 orange marbles. If a bag has 25 green marbles, how many orange
marbles does it contain?
Answer:
40 orange marbles
Step-by-step explanation:
Set up and solve this proportion:
[tex] \frac{5}{8} = \frac{25}{x} [/tex]
[tex]5x = 200[/tex]
[tex]x = 40[/tex]
Here the points.
Good luck in the finals
Edit: 3 minutes later, no one wants it?!
Answer: good luck to you!
Step-by-step explanation:
Answer:
tysm for the points <33
Step-by-step explanation:
:)
Which is a solution for the equation y= 6x + 6
Answer:
Step-by-step explanation:
Which is a solution for the equation y= 6x + 6
solve for yy = 6x + 6 (there is no possibility to simplify)
solve for xy = 6x + 6
6x + 6 = y
6x = y − 6
divide both side by 6
x = (1/6)y - 1Find an equation of the tangent to the curve at the given pointx=cos(t)+cos(2t)y=sin(t)+sin(2t)(-1,1)y=?
Answer:
y = -0.11x + 0.89
Step-by-step explanation:
First find the slope of the tangent line, which is equal to dy/dx
Find the derivative of y at 1:
dy = cos(t) + 2cos(2t)
dy = cos(1) + 2cos(2)
dy = -0.292
Then the derivative of x at -1:
dx = -sin(t) - 2sin(2t)
dx = -sin(-1) - 2sin(-2)
dx = 2.66
So now calculate dy/dx:
dy/dx = -0.11
Now use point slope form to find the equation of the tangent line:
y - 1 = -0.11(x + 1)
y - 1 = -0.11x - 0.11
y = -0.11x + 0.89
the larger circle has center $o$ and passes through $d$. the smaller circle has diameter $od$. what percent of the larger circle's area is gray?
25% is the larger circle area is gray.
Area of a Circle: The area of a circle is pi times the radius squared.
To calculate the area of the circle we have the formula:
A = π r²-----(1)
where
A=area
r=radius.
First, we have to analyze the given data, the large circle center o passes through d, so
Gray circle area=π*(radius)^2----(2)
The radius of the smaller circle = OD/2 substitute in (2)
Gray circle area=π*(OD/2)^2
Gray circle area=π*OD^2/4
Larger circle area=π*(radius)2
radius of the larger circle = OD
larger circle area=π*OD^2
To know the percentage of a large circle we have a small formula:
gray circle area/large circle area--------(3)
=π*OD^2/4/π*OD^2
=π*OD^2/4*1/π*OD^2=1/4
=25/100
=25%
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a parabola opening up or down has vertex (0,0) and passes through (6,9). write its equation in vertex form. simplify any fractions.
A parabola is a graph of a quadratic equation of the form
y = ax^2 + bx + c.In order to write the equation of a parabola in vertex form, we need to first determine the values of a, b, and c.
To find the vertex of the parabola, we know that the vertex lies at the point (0,0), so the x-coordinate of the vertex is 0. The y-coordinate of the vertex is the value of y at x = 0, which we can find by plugging 0 in for x in the equation
y = ax^2 + bx + c.So the vertex of the parabola is (0, c).
Since the parabola passes through the point (6,9), we can plug in these values for x and y into the equation y = ax^2 + bx + c to find the values of a, b, and c. We get the equation
9 = 36a + 6b + c.We can now write the equation of the parabola in vertex form. In vertex form, the equation of a parabola is y = a(x - h)^2 + k, where (h,k) is the vertex of the parabola. In our case, the vertex is (0,c), so we can write the equation as y = a(x - 0)^2 + c. Plugging in the values we found earlier, we get
y = 36a(x - 0)^2 + c.Finally, we can simplify the equation by dividing both sides by 36a. This gives us
y = (x - 0)^2 + c/36a.Since c/36a is a constant, we can simplify the equation even further by letting d = c/36a, so the final equation is
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at confidence, what is the margin of error and the interval estimate of the number of eligible people under years old who had a driver's license in ?
Part a: The margin of error and the interval estimate is E = 0.027 and 0.6120 < p < 0.666 respectively.
Part b: The margin of error and the interval estimate is E = 0.027 and 0.3900 < p < 0.4440 respectively.
Explain the term margin of error?Your results will deviate by various percentage points from the actual population value, according to your margin of error. It is described as a very small percentage that is allowed for error in calculations.Considering the first query;
The 1995 sample proportion is; P₁ = 0.693.The size of the sample is; n = 1200Since the confidence level for the question is 95%, the level of importance is;
α = (100 - 95)%
α = 0.05
Typically, the crucial value of comes out from normal distribution table of α/2 is;
Z(α/2) = 1.96
Typically, this margin of error is denoted mathematically as follows:
E = Z(α/2)*√P₁(1 - P₁)/n
E = 1.96*√0.639(1 - 0.639)/1200
E = 0.027
Mathematically, a 95% Interval estimate is typically written as;
P₁ - E < p < P₁ +E
0.639 - 0.027 < p < 0.639 + 0.027
0.6120 < p < 0.666
Thus, the margin of error and the interval estimate is E = 0.027 and 0.6120 < p < 0.666 respectively.
Part (b)
The 1995 sample proportion is; p₂ = 0.417Sample size: n = 1200Since the confidence level for the question is 95%, the level of importance is;
α = (100 - 95)%
α = 0.05
Typically, the crucial value of comes from the normal distribution table and is;
Z(α/2) = 1.96
Typically, the margin of error is denoted mathematically as follows:
E = Z(α/2)*√p₂(1 - p₂)/n
E = 1.96*√0.417(1 - 0.417)/1200
E = 0.027
Mathematically, a 95% Interval estimate is typically written as;
P₁ - E < p < P₁ +E
0.417 - 0.027 < p < 0.417 + 0.027
0.3900 < p < 0.4440
Thus, the margin of error and the interval estimate is E = 0.027 and 0.3900 < p < 0.4440 respectively.
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The complete question is-
Fewer young people are driving. In 1995, 63.9% of people under years 20 old who were eligible had a driver's license. Bloomberg reported that percentage had dropped to 41.7% in 2016. Suppose these results are based on a random sample 1,200 of people under 20 years old who were eligible to have a driver's license in 1995 and again in 2016.
a. At 95% confidence, what is the margin of error and the interval estimate of the number of eligible people under 20 years old who had a driver's license in 1995?
Margin of error(to four decimal places)
Interval estimate (to four decimal places)
b. At 95% confidence, what is the margin of error and the interval estimate of the number of eligible people under 20 years old who had a driver's license in 2016?