The manager of a factory wants to compare the mean number of units assembled per employee in a week for two new assembly techniques. Two hundred employees from the factory are randomly selected and each is randomly assigued to one of the two techniques. After teaching 100 employees one technique aud 100 employees the other techuique, the manager records the aumber of uaits each of the employees assembles in one week. Which of the following would be the most appropriate inferential statistical test in this situation?
a. Oruc-sauruple z-test
b. Two-sample t-test
c. Matched Pairs t-test
d. Clai-square gooducss-of-fit test
e. One-sample t-test
Answer:
The most appropriate inferential statistic test in the present situation is the;
b. Two-sample t-test
Step-by-step explanation:
From the question, we have;
The number of subjects in each sample, n₁ = 100
The number of samples = 2
The nature of the test = To compare the two means
The value of the population standard deviation, σ = Unknown
From the given parameters, we have;
The t-test is a method of inferential statistics for determining whether the difference between the mean of two groups is significant, that is if the observed difference are due to chance, where the groups are likely to have some characteristics that are related
The t-test is utilized when testing an hypothesis, and it is used for small samples, where the population standard deviation is unknown
The types of t-test used are;
a) One-sample t-test
b) Two-sample t-test
c) Paired Sample t-test
Therefore, a two-sample t-test is most appropriate.
What is the awsner to (-6)(8) + (-11)
Answer:
-59
Step-by-step explanation:
(-6) (8) + (-11)
(-48) + (-11)
-48 -11
-59
1. A square and a rectangle have the same area. The length of the rectangle is 32
centimeters, and the width of the rectangle is 2 centimeters. What is the length, in
centimeters, of a side of the square?
Answer:
8
Step-by-step explanation:
A=l*w
32*2=64
A=s*s
s=√A
√64
=8
The length in centimeters of the side of the square is 8 cm.
What is the area of a rectangle and a square?The area of a rectangle and a square are -
A{R} = Length x Breadth
A{S} = Side x Side
Given is that a square and a rectangle have the same area. The length of the rectangle is 32 cm and the width of the rectangle is 2 cm.
It is given that -
A{R} = A{S}
Length x Breadth = Side x Side
32 x 2 = (Side)²
(Side)² = 64
Side = 8
Therefore, the length in centimeters of the side of the square is 8 cm.
To solve more questions on areas, visit the link below -
brainly.com/question/30066987
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Please Help!! I will give 10 points and brainliest..
Answer:
I would go for D
Mrs.Oliveros bought 12.036 gallons of gasoline for her car.How is this number written in expaned notation
Solve |2x|=8
Tell me how you got the answer pls
Answer:
4
Step-by-step explanation:
2 x 4 = 8
Absolute value means no symbols so it would just be 2 x something equals 8 which is 4.
Which is an equation for the line shown?
A) x=2
B) y=2
C) x=-2
D) y=-2
Answer:
A) x=2
Step-by-step explanation:
Diane deposits $7000 into an account that pays simple interest at a rate of 6% per year. How much interest will she be paid in the first 3 years?
Answer:
1,260
Step-by-step explanation:
6x3=18 7000÷18=1,260
Answer:
18% or 1260$
Step-by-step explanation:
first u find 6% of 7000 then you multiply it by 3 for those three years .
Angela is getting a pedicure at a spa that also offers massages where customers pay by the minute. If Angela only gets a pedicure, it will cost her $35. If she also pays for a 20-minute massage, it will cost her $50.
What is the y-intercept and what does it represent?
Answer:
The y-intercept is 35 and it represents how much she's already going to pay before adding a massage.
Answer: 90
Step-by-step explanation:
1 times 90 equal 90
The two triangular prisms shown are similar. The dimensions of the larger prism were multiplied by a 4/5 scale factor to create the smaller prism.
When the large prism was reduced, the surface area changed by a factor of
64/125
16/25
4/5
10/8
Answer:
B. 16/25
Step-by-step explanation:
Just took the Pre-Test on Edg (2020-2021)!!
Maria divides her work she has to do for her science project into 12 steps she completes 2/12 of the project each night which expression could be used to find how much of the project completed after 4 nights choose all that are correct
Answer:
8/12
Step-by-step explanation:
Given that:
Dividing into 12 steps
Total step, fraction = 1
Each of the 12 steps = 1/12
If two steps is completed in one day:
. Steps completed per day :
2 (1/12)
= 2 /12 steps per day
Fraction of steps completed after 4 days
Fraction of steps per day * number of days
2 /12 * 4
(4*2) / 12
8/12
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Answer:
48 cm
Step-by-step explanation:
6x8 Please dont be mad if im wrong TT>TT
Write an expression equivalent to
4 - (-7)
help
Answer:
7 - (-4)
Step-by-step explanation:
You can turn the numbers.
A cone has radius 9 and a height 12. A frustum of this cone has height 4.
What are the radii of the bases of the frustum?
What is the slant height of the frustum?
What is the lateral area of the frustum?
(If you waste an answer it will be removed so don't try and get "Free" points.)
Answer:
Part A)
The lower base has a radius of 9 units, and the upper base has a radius of 6 units.
Part B)
5 units.
Part C)
75π or about 235.62 square units.
Step-by-step explanation:
Please refer to the figure below.
The cone has a radius of 9 units and a total height of 12 units.
A frustum of the cone has a height of 4 units.
Part A)
The lower radius of the frustum will simply be 9 units.
For the upper radius, we will use the properties of similar triangles. We will compare the smaller upper triangle to the overall larger triangle. This yields:
[tex]\displaystyle \frac{12}{8}=\frac{9}{x}[/tex]
Solve for x. Simplify:
[tex]\displaystyle \frac{3}{2}=\frac{9}{x}[/tex]
Cross-multiply:
[tex]18=3x\Rightarrow x=6[/tex]
The upper base has a radius of 6 units.
Part B)
We can first find the total slant height of the entire cone. By using the Pythagorean Theorem, this yields that the total slant height is:
[tex]SH^2=12^2+9^2[/tex]
Simplify:
[tex]SH^2=225\Rightarrow SH=15\text{ units}[/tex]
Now, find the slant height of the upper cone:
[tex](SH_\text{cone})^2=8^2+6^2=100[/tex]
So:
[tex]SH_\text{cone}=10[/tex]
Then the slant height of the frustum will be the cone subtracted from the total. Thus:
[tex]SH_{\text{frustum}}=15-10=5\text{ units}[/tex]
Part C)
We can first find the lateral area of the entire cone. The lateral area is given by:
[tex]LA=\pi r\ell[/tex]
The lateral area of the entire cone will be:
[tex]LA=\pi (9)(15)=135\pi[/tex]
The lateral area of the upper cone will be:
[tex]LA_\text{cone}=\pi(6)(10)=60\pi[/tex]
Then the lateral area of the frustum is:
[tex]LA_\text{frustum}=135\pi-60\pi =75\pi\text{ units}^2\approx235.62\text{ units}^2[/tex]
An artist used silver wire to make a square that has a perimeter of 40 inches. She then used copper wire to make the largest circle that could fit in the square.
How many more inches of silver wire did the artist use compared to copper wire ?
Answer: The artist used 8.6 inches more of silver wire
Step-by-step explanation:
Perimeter of the square
P = 4*a
P = 4*a = 40 in
a = 10 in
Each side of the square has a length of 10 in
The diameter of the circle is equal to the length of the side of the square
Diameter = 10 in
Perimeter of the circle
P_c = 2*π*radius = π*diameter
P_c = (3.14)*10 in = 31.4 in
Inches of silver wire (square) = 40 in
Inches of copper wire (circle) = 31.4 in
40- 31.4 in = 8.6 in
PLZ HELP ILL MARK U BRAINLIEST!!!
Answer:
x=18
Step-by-step explanation:
7x-1=125
+1 +1
7x=126
7 7
X=18
With the trend on this scatter plot, how old would someone be who spends 50 minutes on homework per day?
A. 18 years old
B. 12 years old
C. 8 years old
D. 14 years old
A set of nine data points is shown below.
8, 11, 12, 10, 9, 7,5, 3, 9
Which statement is true if a tenth data point of 45 is added to the data set?
A
The mean and median will both increase.
B
The mean will increase and the median will decrease.
The mean will increase and the median will remain the same.
с c
D
The mean and median will both decrease.
Which statement is true if a tenth data point of 45 is added to the data set
Answer:
first arrange the numbers in ascending order 3,5,7,8,9,9,10,11,12
Answer:
с
The mean will increase and the median will remain the same.
Step-by-step explanation:
A pound is epual to 0.454 kilograms , how many kilograms does a 142-pound man weigh?
9. If AJKL - ANML, find the values of x and y.
Answer:
x = 35, y = 18
Step-by-step explanation:
Since both triangles are similar, their sides must be proportional with means all of them have a common ratio.
If NM = 16, and KJ = 40. 40/16 is the ratio from ∆NML to ∆JKL. The reciprocal(numerator and denominator flip, the product of a number and it's reciprocal is 1) of this is true from ∆JKL to ∆NML.
Now to find the missing sides you multiply a side by the common ratio to find it's corresponding side length.
Dividing by a number is the same as multiplying by the reciprocal of that number.
40/16 can be reduced to 5/2 or 2 ½ as a mixed fraction.
16/40 can be reduced to 2/5 or 0.4 as a decimal.
Since the scale of ∆JKL is greater than ∆NML, you multiply by 5/2 to get the corresponding side of ∆JKL from ∆NML.
Since the scale of ∆NML is less than ∆JKL, you multiply by 2/5 to get the corresponding side of ∆NNL from ∆JKL.
Therefore x = 14 × 5/2 = 70/2 = 35.
y = 45 × 2/5 = 90/5 = 18.
A magazine has 8 pages of reading for every 2 pages of advertisements. How many pages of reading does it have for 1 advertisement?
Answer:
4
Step-by-step explanation:
8/2=4
Can someone help me with a question!?!?
If the parent graph f(x) = x² is changed to f(x) = 2x², the vertex of the parabola will still remain (0, 0) because whenever the equation of a parabola is in the form y = ax², the vertex will always be (0, 0).
Now if a is a big number, the parabola will become narrower.
So it will stretch vertically and become narrower.
pls help no wrong answers pls
Answer:
45°
Step-by-step explanation:
Sum of angles lying on any part(upper or lower) of a line is 180°.
=> (2x + 45°) + x = 180°
=> 3x = 180° - 45°
=> 3x = 135°
=> x = 135°/3
=> x = 45°
What steps transform the graph y = x2 to y = x2 + 8
Answer:
Jun 25, 2018 — Reflection over the y -axis. Vertical stretch by a factor of two. Horizontal translation right two units. Vertical translation up two units. I hope this helps you .. ;]
Step-by-step explanation:
A factory makes rods by cutting plastic pipes that are 5 feet long into 8 rods. What is the total length of 13 rods?
Answer:8.125 ft
Step-by-step explanation:
Given
Plastic pipes of 5 ft are cut into 8 rods
The length of each rod will be
[tex]\Rightarrow \dfrac{5}{8}\ ft[/tex]
The total length for 13 rods are
[tex]\Rightarrow L=13\times \dfrac{5}{8}=\dfrac{65}{8}\ ft\\\Rightarrow L=8.125\ ft[/tex]
Help!!!!! Which of the following is the difference of two squares?
Answer:
b
Step-by-step explanation:
i did this b4
The following is the difference of two squares
2. 8x² - 16y²
3. 25m² + 100n²
4. 100 [tex]a^4[/tex] - 9 [tex]b^{12[/tex]
What is Expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows: Expression: (Math Operator, Number/Variable, Math Operator)
Given:
we have to find expression for difference of two squares
1. 4g - 16h
= (2)²g- (4)²h
2. 8x² - 16y²
= (2√2x)² - (4y)²
3. 25m² + 100n²
= (5m)² + (10n)²
4. 100 [tex]a^4[/tex] - 9 [tex]b^{12[/tex]
= (10a²)² - (3[tex]b^6[/tex])²
Learn more about expression here:
https://brainly.com/question/13947055
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1 p
1.) On Tuesday at lunchtime, it was 29°C. By sunset, the temperature had
dropped to 16°C. How much did the temperature change by?
Answer:
Expression is; 29 - x = 16
Step-by-step explanation:
I've attached an image showing the number line
Step-by-step explanation:
We are told that at lunchtime, it was 29 degrees Celsius and that by sunset, the temperature had dropped to 16 degrees Celsius.
Let the drop be x.
Thus;
29 - x = 16
I've attached an image showing the number line
yoo i need help asap
Answer:
A point on (0,2) and (7,3)
Step-by-step explanation:
First draw a point on 2 y axis to represent y intercept. The slope is rise over run in this example, do it backwards so go right 7 and 1 up. So it is (7,-3)
Check: 3-2/7-0
1/7 is slope
So this solution is correct
Bob owned 25 pairs of shoes in January, but then he sold a bunch and now owns 12. What is the percent decrease?
5•7^2y=175
Which of the following is the solution of the equation?
Answer:
D seems to be the answer
Step-by-step explanation:
log7(35) =2
Answer:
C
Step-by-step explanation:
y=log7(35)/2
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