Answer:
The minimum sample required = 1296.65
Step-by-step explanation:
Given that:
Variance [tex]\sigma^2 = 2.89[/tex]
Standard deviation [tex]\sigma = \sqrt{2.89}[/tex]
Standard deviation [tex]\sigma = 1.7[/tex]
Margin of error = 0.11
Confidence Interval = 98%
Level of significance = 1 - 0.98 = 0.02
The critical value = [tex]Z _{\alpha//2} = Z_{0.02/2} = Z_{0.01}[/tex]
= 2.33
Thus, the minimum sample size is given by the formula:
[tex]n = \bigg ( \dfrac{Z_{\alpha/2} \times \sigma }{E} \bigg)^2[/tex]
[tex]n = \bigg (\dfrac{2.33 \times 1.7 }{0.11} \bigg)^2[/tex]
n = 1296.65
Katie completes 2/3 of her craft project in 3/4 of an hour at this rate what fraction of the craft project does Katie complete in one hour give your answer in fraction form
Answer:
2/3 in 3/4 of an hour. that would mean u an extra 1/4 of an hour would give Katie the time to finish up the project
Step-by-step explanation:
Katie, take no breaks when u can get this done in an hour. don't be lazy
May you please help me on this question ill give out braily
Answer:
D is your answer :D can you answer my question pleasseeeee it would be easy for you
X/4-14=9
what is x?
Step-by-step explanation:
x/4=9+14
x/4=23
x=92
iget 92
A taxi cab charges a flat fee of $1.75 plus $0.30 for each half-mile or fraction of a half-mile.
a) Fill in the chart.
b)write and equation for the function.
Answer:
a) there is no chart but we can elaborate one:
taxi fee half-miles driven
$1.75 0
$2.05 1
$2.35 2
$2.65 3
$2.95 4
$3.25 5
$3.55 6
b) y = 0.3x + 1.75
where:
y = taxi fee
x = half miles driven
What is the constant
rate of change?
y = 5 – 17x
Answer:
-17
Step-by-step explanation:
The constant rate of change of a line is always the SLOPE. In the equation
y = mx + b, m represents the constant rate of change.
The constant rate of change from this equation is -17 because it's the slope.
A new sidewalk will be 4 feet wide, 240 feet long, and filled to a depth of 9 inches (0.75 foot) with concrete. How many cubic yards of concrete are needed?
Answer: The number of cubic yards of concrete that are needed is 720.
Step-by-step explanation: The same formula for this type of shape stays the same: l*w*(h or d).
240 * 4 = 960
960 * 0.75 = 720
The amount of cubic yard of concrete needed is about 720 cubic foot
How to calculate the volume of box?The formula for calculating the volume of the concrete is expressed as:
V = lwh
l is the length =240feet
w is the width = 4 feet
h is the depth = 0.75foot'
Determine the volume
V = 240 * 4 * 0.75
V = 720 cubic feet
Hence the amount of cubic yard of concrete needed is about 720 cubic foot
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Evaluate this expression.
112.212 - (- 3.25)
Answer:
115.462
Step-by-step explanation:
Answer: 115.462
Step-by-step explanation:
To start, the first thing we can observe is two negative signs, which we know turns into a positive sign.
Therefore, we now have:
112.212 + 3.25
115.462
Hope this helps!
What’s the answer to this multi step equation? -3(12x+9)=9
Answer: x=-1
Step-by-step explanation:
Please I need some answers
You reflect triangle PQR, with vertices P(-2, -4), Q(-3, -1), and R(-4, -4), across the y-axis to get triangle P′Q′R′. What are the coordinates of triangle P′Q′R′?
Answer:
Step-by-step explanation:
If you reflect about the y-axis, only the x-coordinates reverse sign while the y-coordinates stay the same....
P'(2,-4), Q'(3,-1), R'(4,-4)
Please help; I’m stuck on this problem and can’t get past it :(
Diego says that that the product of 0.51 × 2.427 will have five decimal places. Is Diego correct? Explain.
Answer: That is true
Step-by-step explanation: You add the decimal places of both numbers that u are multiplying
Answer:
Yes DIEGO is correct
Step-by-step explanation:
My man DIEGO
What is 56/15 as a decimal rounded to the nearest tenth
Answer:
3.73
Step-by-step explanation:
56/15
3 11/15
3.73
Look at these expressions:
3w + 9x - 15y + 7w + 2x + 9y
9x - 8w
6w + 5y + 7x + 4x - 11y + 4w
5x + 9y
3x - 2y + 14w - 4y - 4w + 8x
2y +5w
4w + 5x – y + 6w - 16r - 5y
perimeter =
[4] How many of them are equal?
Do not factorise the answer. Can someone please help me
Answer: the first third fourth and last one
Step-by-step explanation:
If I have a black lab, then I have a dog. What is this statement called: if I do not have a dog then I do not have a black lab. HELP PLEASE
A) inverse
B) converse
C) conditional
D) contrapositive
Answer:
contrapositive
Step-by-step explanation:
The ratio of boys to girls in a class is 4: 5
a) What fraction of the class are boys?
b) What fraction of the claşs are girls?
Answer:
The fraction of a boy is 4/9
The fraction of a girl is 5/9
Hope this helps!!!!!
look for a pattern in the first three equations
Answer:
Is there a graph orrrrr?
Step-by-step explanation:
If you can answer this it would help me out so much!
A certain quadratic function has the factors (x + 3) and (2x - 1). What are the solutions of the function?
A- (0,3) and (0, -1)
B- (-1,0) and (3,0)
C- (6,0) and (-3,0)
D- (0,1/2) and (0, -3)
Answer:
Thx for my points back that you stole
Step-by-step explanation:
What is the length of z? (Round to the nearest tenth)
Answer:
z = 10.8
Step-by-step explanation:
[tex]9^{2} + 6^{2} = c^{2}[/tex]
81 + 36 = [tex]c^{2}[/tex]
117 = [tex]c^{2}[/tex]
c = [tex]\sqrt{117}[/tex]
c = 10.8
c = z
Please help 15 points available! What is the equation of the line that is perpendicular to y - 3 x = 2 and that passes through (6,1)?
y = 1/3x - 1
y = 1/3x + 3
y = -1/3x + 3
y = -1/3x - 1
Answer:
C) y = -1/3x + 3
Step-by-step explanation:
y - 3x = 2
+ 3x + 3x
y = 3x + 2
find the reciprocal of the slope (3) which is -1/3 so -1/3 will be the slope for the perpendicular line
y = (-1/3)x + b
now find the y-intercept (b)
(6,1) x = 6 y = 1
y = (-1/3)x + b
1 = (-1/3)6 + b
1 = -2 + b
+2 +2
3 = b
y = (-1/3)x + 3
I NEED HELP WITH THIS PLSS!!!
What is the slope of a line that passes through (-4 -13) and (19, 11)
a. 23/24
b. 24/23
c. -23/24
d. -24/23
The answer you're looking for is 24/23.
I just took the test myself and this is correct.
Seti graphed the point Three-halves and labeled that location P. Which number line shows this point? A number line going from 0 to 2 in increments of 1. There are 2 equals spaces between each number. Point P is half-way between 1 and 2. A number line going from 0 to 2 in increments of 1. There are 3 equal spaces between each number. Point P is on the mark to the left of 1. A number line going from 0 to 2 in increments of 1. There are 2 equals spaces between each number. Point P is half-way between 0 and 1. A number line going from 0 to 2 in increments of 1. There are 3 equal spaces between each number. Point P is on the mark to the right of 1.
Answer:
its D
Step-by-step explanation:
Answer:Your Answer Is (D)
Step-by-step explanation: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA HAPPY HALLOWEEN!!!
It is known that a laptop company's average production is given by P(t) = (150t) / (3t+20), where
t is the time (in days). How many days will it take the company to produce 30 laptops?
Answer:
10 daysStep-by-step explanation:
Step one:
given that the expression for the company's average production is
[tex]P(t) = (150t) / (3t+20)[/tex]
Required:
t, when P=30
Step two:
substituting we have
30=150t/3t+20
cross multiply we have
30(3t+20)=150t
90t+600=150t
collect like terms
600=150t-90t
600=60t
divide through by 60
t=600/60
t=10 days
it will take the company 10 days
Many professional schools require applicants to take a standardized test.
Suppose that 1000 students take such a test. Several weeks after the test,
Pete receives his score report: he got a 63, which placed him at the 73rd
percentile. This means that... *
Pete scored less than about 73% of the test takers.
Pete scored less than about 63% of the test takers.
Pete scored more than about 63% of the test takers,
Pete scored more than about 73% of the test takers,
Pete's score was below the median.
Answer:
if pete placed in the 73rd percentile, this means that his score was better than 73% of the other test takers, so the fourth option: he scored more than about 73% of the test takers
Step-by-step explanation:
hope this helps :)
The meaning is Pete scored more than about 73% of the test takers.
What is data?Data is information that has been translated into a form that is efficient for movement or processing.
Given situation:
Pete receives his score report: he got a 63, which placed him at the 73rd
percentile.
Percentile is a comparison score between a particular score and the scores of the rest of a group.
So, 73 percentile shows he had done better then 73% of people.
Hence, Pete scored more than about 73% of the test takers.
Learn more about data here:
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if x=3 and x-y= -3
a.4
b.6
c.5
d.10
2.6x0.47pls help
pls pls
Answer:
1.222
Step-by-step explanation:
Find the zero of the function: f(x) = -5x + 5
Answer:
Step-by-step explanation:
Answer: 1
Step-by-step explanation: Do math
What is the image point of (0, 2) after a translation lett 5 units and down 1 unit?
Answer: (-3, 1)
explanation: I drew a graph and translated it!
HEEEEELP PLZ WILL GIVE 30 POINTS!!!!!!!!!!
Answer:
Emily pays 10.40 and Andy pays 8 dollars
Step-by-step explanation:
So let's start with Emily, she need 21 feet of wire, so we convert this to inches so; [tex]1foot=12inches\\ 21feet=(12inches)*21=252inches[/tex] but it's not listed on the tableSo we try to find the closest approximation to 252 inches which we get by adding 100 inches and 160 inches to get 260 inchesSo Emily will pay the cost of those to lengths so 100 inches cost 4.00 dollars and 160 inches costs 6.40 dollarsso she pays 4.00+6.40=10.40 dollarsNow for Andy we do much the same and find the inches in 11 yards[tex]1 yard=36inches\\ 11yards=(36inches)*11=396inches[/tex] this is also not listedSo we get the closest approximation, which is 4 of the 100 inch wires, so we get 400 inches costing 4*4.00=8 dollars