**URGENT!!! 30 POINTS & BRAINLIEST
An experiment is conducted to estimate the difference in work productivity for employees under two conditions: with and without music playing in the background. Twenty employees volunteered to be part of the study. Ten of the volunteers were randomly assigned to work for one week with music playing in the background. The other 10 volunteers worked for one week without music playing in the background. Productivity is measured by counting the number of units produced for the week. Here are dotplots, which display the data: (See attached image)
The conditions for inference have been met. What is the correct 99% confidence interval for the difference in the population means (without – with)?
A. (1.370, 7.430)
B. (1.445, 7.355)
C. (1.525, 7.275)
D. (1.597, 7.203)
Answers
Answer:
C. (1.525, 7.275)Step-by-step explanation:
correct on edge 2021
Related Questions
During testing, the experimental probability of completing a new game with a perfect score was found to be StartFraction 1 over 500 EndFraction. If 1,000,000 people buy and play the game when it is released, how many players will complete the game with a perfect score?
Answers
Given: 1/500 and 1,000,000
Multiply 1/500 & 1,000,000
1/500 * 1,000,000 = 2000
Thus, 2000 people are likely to complete the game with a perfect score
20 POINTS!!
dont answer unless you know
Answers
Answer:
b
Step-by-step explanation:
a
it is A because a variation equation needs numbers and variables
select an ordered pair that is a solution to the equation represented by the graph.
a: -4,0
b: -2,-4
c: -2,0
d: 0,-4
Answers
Answer:
A. -4,0
Step-by-step explanation:
will mark brainliest
Answers
Answer:
25 un²
Step-by-step explanation:
Formula = 1/2(b x h)
Base = 10
Height = 5
1/2( 10 x 5) = 1/2 (50) = 25
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Answer:
[tex]25 \: {units}^{2} [/tex]
Step-by-step explanation:
[tex] \frac{(10 \times 5)}{2} = 25[/tex]
multiple choice/ please help!!!
Answers
Answer:
All are right answer
But one is not (C)
There will no cot
Geometry, Chapter 9 test
Answers
Quadrilateral ABCD has two pairs of parallel opposite sides and the m∠A=90°. Classify quadrilateral ABCD.
Answers
Answer: Rectangle
Step-by-step explanation: A rectangle has opposite sides which are parallel and congruent and a rectangle must have a right angle
Suppose you work as a clerk at a local retail store earning $6 per hour. The amount
of your weekly paycheck (before taxes are taken out) could be written F(x) = 6x.
16. What is the independent variable in this function and what does it represent?
17. What does the dependent variable represent?
Answers
Answer:
the independent variable is amount being paid per hour, as the final outcomes relys on that answer. the dependent variable is the hours worked, as thats the variable that can be changed.
I just need help finding what Y is
Answers
Ellie is interested in getting a new phone. One phone company, phone 1 charges a monthly fee of 6$. They also charge 0.10$ per minute. Another company, phone 2, charges 5$ for a monthly fee and 0.25$ per minute. Write an equation for the total cost of each phone bill, where y is the total cost and x is the total number of minutes on the phone. Which company will allow Ellie to talk the longest is she only wants to spend 22$ a month
Answers
Answer:
Phone 1 will allow Ellie to talk the longest
Step-by-step explanation:
Phone 1:
(0.10x) + 6 = y
(0.10x) + 6 - 6 = 22 - 6
0.10/0.10x = 16/0.10
x = 160 minutes
Phone 2:
(0.25x) + 5 = y
(0.25x) + 5 - 5 = 22 - 5
0.25/0.25x = 17/0.25
x = 68 minutes
The height of the Eiffel Tower in Paris is 980 feet. If the scale of the cake to the actual tower will be 1 in: 15ft, how tall should Julie make the cake? Show your work and explain your reasoning. Will mark brainliest to the correct answer
Answers
Darien is discounting all prices on the sales for 20%. Which expression below represents the price, p, of any item he marks down
A) 2.2p
B) 1.2p
C)0.8p
D)0.2p
Answers
Answer: C. 0.8p
Step-by-step explanation:
Since Darien is discounting the prices by 20%, the new price will be 80% of the original price, or 0.8 times the original price
PLZZZ HELP MEE
James adds vitamin drops to his fish tank to keep his fish healthy. If James
follows the instructions on the bottle of vitamins, how many capfuls should he add
to his 450-litre tank? (4 marks)
• 2 drops per 5 litres
of water
• 1 capful = 40 drops
Answers
Step-by-step explanation:
350/5=70 liters X 2 drops for every 5 liters=140 drops needed for the whole tank.
Since 1 cupful contains 40 drops, the we have this:
140 drops needed for the full tank/40 drops contained in one cup, or,
140/40=3 1/2=3.5 number of cupfuls needed for the full tank.
hopefully this helps
help me out pleaseeeeeeeeeee
Answers
Step-by-step explanation:
1. 6y=2x+5(divide all sides by 6) y=1/3x+5/6 =1/3
Which number is farther from zero,3/4 or-1 1/4
Answers
Answer:
-1 1/4
Step-by-step explanation:
Answer:
-1 1/4 ofc
Step-by-step explanation:
imagine -1 1/4 as 1 1/4, 1 1/4 > 3/4
What is the vertex of the absolute value function below?
Answers
Answer: (-3, 2)
Step-by-step explanation:
Which expressions represent the "the sum of 3 and n"?
Select all that apply.
A. 3n
B .n+3
C .3+n
D .n+n+n
E .n^3
Answers
Answer:
C
Step-by-step explanation:
The answer would be C, yet if this was for homework or a test, you would write it out as "3 + n".
Answer:
It would be C, but as this is probably a practice test it would be 3 + n.
how do you write X to the 4th power >>?
Answers
Answer:
x^4
Step-by-step explanation:
Hey, I’m very bad at math and desperate. Help pls <333
Answers
Answer:
you need to reverse the symbol in inequality a.
Step-by-step explanation:
i hope this helps :)
Consider the square pyramid shown
0127
Which are about the pyramid? Check all that apply
O The base or square with four sides, each measuring 756 feet
O the slant height of the pyramid is 612
O The slant height of the pyramid 756 feet
O All four wangutarties are congruent
O All four tangulat faces are not congruent
O The pyramid has four lateral faces
Answers
6.
Match the graph with its equation.
A. 7x + 7y = 49
B. –7x +7y = –49
C. 7x – 7y = –49
D. 7x + 7y = 0
Answers
Answer:
B. –7x +7y = –49
Step-by-step explanation:
Graph the line using the slope and y-intercept, or two points.
Slope:
1
y-intercept:
(
0
,
−
7
)
x
y
0
−
7
1
−
6
1. Calculate the approximate area of the sector with a central angle of 87 as shown below. Round to the nearest hundredths
A 1.27
B 0.98
C21.97
D 5.31
Answers
Given PQR and STU,what is Q?
Answers
can you guys help me on this one please ?
Answers
Answer:
C7t
Step-by-step explanation:
Help PLEASE MUCH APPRECIATED!!! No websites please❤️
Answers
Answer:
67 degrees
Step-by-step explanation:
Answer: 67
Step-by-step explanation: there all parallel to one another right and y and z are right beside each other therefore the same distance from M
A circular sign has a diameter of 13 feet.
What is the circumference of the billboard
sign, in feet?
Answers
Answer:
47.12 ft
Step-by-step explanation:
C = 2πr
2 · π · 7.5
≈ 47.12
Olivia download music for $1.89 per song. She has a credit on her account for $3. Which expression could be used to represent the cost of the music if Olivia downloads m songs?
Answers
Answer:
Answer 3 (1.89m - 3)
Step-by-step explanation:
Since we know that the price per song is $1.89, that is going to be the part of the equation that goes with the variable.
Since she has a 3 dollar credit, this will reduce the cost of whatever amount of songs she is buying by 3 dollars, which means the second part of the equation is -3. You have your answer, 1.89m - 3.
A line segment can be drawn from each vertex of a polygon to every other vertex, forming the sides and
diagonals of the polygon. A square, for example, has 4 sides and 2 diagonals. Using combinations, write
an expression that would give you the total number of sides and diagonals for a polygon with
sides.
Answers
Answer:
n(n - 3)/2
Step-by-step explanation:
We are told that;
A square has 4 sides and 2 diagonals.
Now, a pentagon will have 5 sides and 5 diagonals
A hexagonal when drawn will have 6 sides and 9 diagonals
Thus, we see that;
When n = 4, d = 2
When n = 5, d = 5
When n = 6, d = 9
Using combination, we will find number of pairs of 2 vertices that can possibly be formed from n-vertices. Thereafter we will subtract n from that since it's neighboring vertices can't combine with the current one.
Thus, we have;
C(n, 2) - n
This gives s;
(n(n-1)/2) - n
Simplifying this gives;
(n(n - 1) - 2n)/2
>> (n² - n - 2n)/2
>> (n² - 3n)/2
>> n(n - 3)/2
Asking again because last time I didnt get an actual answer. What is the surface area of this composite figure?
Answers
Answer:
644 cm^2
Step-by-step explanation:
10*7*2+12*7*2+12*10=140+168+120=428
10*12-3*3=111
428+111=539
8*3*4+3*3=96+9=105
539+105=644
The difference of the two numbers is 1.Their sum is 23.find the numbers
Answers
Answer:
11 and 12
Step-by-step explanation:
The two numbers will be called x and y. The sum of x and y is 23 and the difference is 1.
x + y = 23
x - y = 1
Add the equations together
x + y + x - y = 23 + 1
2x = 24
x = 12
y = x - 1
y = 11