Answer:
cookie=0.5, popcorn=4
Step-by-step explanation:
1x+2y=5
1x+4y=6
cookie cost 0.5
popcorn cost 4
A CD manufacturer wanted to determine which of two different cover designs for a newly released CD will generate more sales. The manufacturer chose 70 stores to sell the CD. Thirty-five of these stores were randomly assigned to sell CDs with one of the cover designs and the other 35 were assigned to sell the CDs with the other cover design. The manufacturer recorded the number of CDs sold at each of the stores and found a significant difference between the mean number of CDs sold for the two cover designs. Which of the following gives the conclusion that should be made based on the results and provides the best explanation for the conclusion?
A. It is NOT reasonable to conclude that the difference in sales was caused by the different cover designs because this was not an experiment.
B. It is NOT reasonable to conclude that the difference in sales was caused the different cover designs because there was no control group for comparison.
C. It is NOT reasonable to conclude that the difference in sales was caused the different cover designs because the 70 stores were not randomly chosen.
D. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the cover designs were randomly assigned to stores.
E. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the sample size was large.
Answer:
The statement that gives the best conclusion that should be made based on the results and provides the best explanation for the conclusion is option D;
D. It is reasonable to conclude that the difference in sales was caused by the different cover designs because the cover designs were randomly assigned to stores
Step-by-step explanation:
The data given in the question are presented as follows;
The particulars the CD manufacturer wants to determine = The CD cover design that will generate more sales
The mode of selection of the stores for the test = Random selection
The number of stores in each group of stores, n = 35 stores
The number of sets of stores tested = 2 sets of stores
Let [tex]\overline x_1[/tex] represent the mean number CDs sold at one set of stores and [tex]\overline x_2[/tex] represent the mean number CDs sold at the other set of stores
The null hypothesis, H₀; [tex]\overline x_1[/tex] = [tex]\overline x_2[/tex]
The alternative hypothesis, H₀; [tex]\overline x_1[/tex] ≠ [tex]\overline x_2[/tex]
Given that the statistical analysis shows that the difference in mean between the two sets of randomly selected stores is significant, we therefore should reject the null hypothesis and accept the alternative hypothesis that there is a significant difference in CD sale attributable to the difference in cover design as the CDs having on of two cover design where assigned randomly to the stores.
In which set do all values make the inequality 3x+5<26 true?
2x - 1 < 10
Add 1 to both sides:
2x < 11
Divide both sides by 2:
x < 5.5
Answers must be smaller than 5.5, therefore option (D) is the answer.
Answer: D. {2, 3, 4}
<3 - Bee
On two investments totaling $6,500, Lydia lost 7% on one and earned 8% on the other. If her net annual receipts were $364, how much was each investment?
Answer:
$3,442.40
$3,057.60
Step-by-step explanation:
The computation of the each investment is as follows:
let us assume the one investment be x
And, the other investment be y
So
According to the question
x + y = $6,500
And,
-7x + 8y = $364
Now multiply by 7 in equation 1
7x + 7y = $45,500
-7x + 8y = $364
15y = $45,864
y = $3,057.60
x = $6,500 - $3,0657.60
= $3,442.40
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Answer and Step-by-step explanation:
To find the range, we must plug in the values 0 to 15 into the function to find the values of f(x), which are the range.
When plugging in the values, we see that the answer should be the last one.
We start with a pay of $15.50, and it increases each time by $10, until it reaches $165.50.
So, D is the answer.
#teamtrees #PAW (Plant And Water)
Rewrite the expression without parentheses. 13m−(3+8m)
Answer:
13m-3+8m
Step-by-step explanation:
based on the area of the squares determine whether the triangle shown is a right triangle.
Answer:
No, it is not a right triangle.
Step-by-step explanation:
Answer:
not a right triangle
Step-by-step explanation:
find endpoint T, given an endpoint S (-2, 9) and Midpoint M (8, 0)
Solve for m:
M
_ - 23 = 109
6
Answer:
132
Step-by-step explanation:
I'm assuming the six is not supposed to be there so here's what I did:
M - 23 = 109 - all you need to do is add 23 to both sides
M = 132 - doing this cancels out the -23 on the left
A garden at the local library is in the shape of a right triangle the dimensions of the garden are shown in the diagram. What is the area in the square feet Area of triangle = 1/2 bh
A survey of a random sample of juniors shows that 12% are not planning to attend homecoming, and 88%
are planning to attend. The survey has a margin of error of t8%. What is the range for the percentage of juniors who are
going to homecoming?
F 4% to 20%
G 4% to 12% H 80% to 96%
J. 4% to 96%
Answer:
i would guess
Step-by-step explanation:
Help pleas I need help
Answer:
3.05
Step-by-step explanation:
Answer:
3 3/4 inches
Step-by-step explanation:
Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!!
For Every 1 dog there are 4 cats or 1:4
Hope this helps ヾ(•ω•`)o - Six
need help with area for solving this
Answer:
Step-by-step explanation:
First find the area of total rectangle which equals 20 * 12 = 240
Second find the area of triangle which equals 0.5 * 4 * 6 = 12
The required area = total rectangle - triangle = 240 - 12 = 228
Answer:
NEEEEEGARRRRR
Step-by-step explanation:
Which of the following best explains why cosine StartFraction 2 pi Over 3 EndFraction not-equals cosine StartFraction 5 pi Over 3 EndFraction
Answer:
B.)- Cosine is negative in the second quadrant and positive in the fourth quadrant.
Step-by-step explanation:
Answer:
B.) Cosine is negative in the second quadrant and positive in the fourth quadrant. i just took the quiz
Step-by-step explanation:
I hope this helped ;)
x=
A. 100
B. 50
C. 25
Answer:
b=50 central angle equal to the arc
José and Wally install windows. Each day, José installs 5 more than 2 times as many windows
as Wally installs. If José installs 15 windows each day, which equation can be used to
determine the number of windows, w, that Wally installs?
A: 2w-5= 15
B: 2w +5= 15
C: 5w+2 = 15
D: 5w-2= 15
I KNOW ITS NOT MATH BUT PLS ANSWER WITH A CORRECT RESPONSE
Despite medical warnings, a______number of Americans still use tobacco.
OPTIONS
A. Moderate
B. High
C. Low
Answer:
I'm pretty sure the answer is Despite medical warnings, a (B) high number of Americans still use tobacco.
Step-by-step explanation:
Sal buys y pens and some pencils. He buys 10 more pencils than pens. How many pens and pencils does he buy
altogether?
Answer:
20
Step-by-step explanation:
Help me please please please please
pi is 3.15 so I think its pi time radius to get the area which is 3.15 times 9. that equals to 28.35
Help me please I don’t understand this
Answer:
D) 159°
Step-by-step explanation:
[tex]10x+9+90+34+6x-13=360[/tex]
→[tex]16x=240[/tex] →[tex]x=15[/tex]
∠[tex]YZU=10*15+9=159[/tex]
[tex]---------[/tex]
hope it helps...
have a great day!!
Answer:
159°
Step-by-step explanation:
A circle measures 360°. We can use this knowledge to find the unknown angles.
(10x + 9) + (6x - 13) + 34 + 90 = 360
Combine like terms and solve for x.
16x + 120 = 360
16x = 240
x = 15
So, we have found the value of x, and can now find m∠YZU.
10(15) + 9 = m∠YZU
m∠YZU = 159°
We can ascertain that this is the answer by plugging in x for the initial equation we created.
(10(15) + 9) + (6(15) - 13) + 34 + 90 = 360
159 + 77 + 34 + 90 = 360 It works!
What is the slope of the line that is parallel to the line joining the points (7, -5) and (-5, 7)?
Answer:
The slope is -1.
Step-by-step explanation:
We want to find the slope of the line that is parallel to the line joining the points (7, -5) and (-5, 7).
First, we can use the slope formula to find the line passing through (7, -5) and (-5, 7). The slope formula is:
[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Substitute and evaluate:
[tex]\displaystyle m=\frac{(7)-(-5)}{(-5)-(7)}=\frac{12}{-12}=-1[/tex]
So, its slope is -1.
Recall that parallel lines have the same slope.
Therefore, the slope of the line that is parallel to the line joining the points (7, -5) and (-5, 7) will also be -1.
A lighthouse can light up to 40 miles away through an angle of 125 degrees. What area can the lighthouse light? Round your answer to the nearest tenth.
Answer: 12
Step-by-step explanation:
help, thank youu
A: 75
B: 61
C: 48
D: 80
Answer:
The answer is C, 48
Step-by-step explanation:
Its the only answer that makes sense
Answer:
75
Step-by-step explanation:
1. Eliminate wrong answers
a. (boys 5 & girls 4) meaning the boys should have a higher number than girls (which is 60) this meaning that 48 and 61 can not be the correct answer.
5/4=x/60
x=(5/4)*60
x=75
Math rocks
Leaving it to the obvious chose(The answer is 75)
Hope this helps
Let f(x)=x^2+2 and g(x)=1-3x. Find each function value: f(g(-1))
Answer:
g(-1)=4 ,f(g(-1))=18
Step-by-step explanation:
g(-1):
1-3(-1)=4
f(g(-1)):
sub in g(-1) as x
(4)^2+2=18
This is 7th grade math pls help
DON'T PUT A RANDOM LINK JUST TO GET POINTS
Answer: ur correct
Step-by-step explananation
4
Select the correct answer.
Shania's test scores in 8 subjects were 88, 91, 85, 74, 69, 72, 80, and 87. Shanla found the middle number of her scores. W
did she find?
O A.
a measure of center
OB.
a measure of variation
Ос.
a measure of neither variation nor center
OD.
a measure of both variation and center
Reset
Next
Answer:
A: Measure of center, also known as the Median.
Sarah went to a basketball game. She bought a ticket to the game and a bag of
popcorn spending a total of $15.00. Tyler went to a basketball game. He bought a
ticket to the game and 3 bags of popcorn spending a total of $30.00. How much is a
ticket to the game?
o $4.75
o $10.50
O $7.50
O $5.25
Answer:
10.5
Step-by-step explanation:
Please help! I will give brainlist!!
Answer:
31.5
Step-by-step explanation:
Assuming that the lowest point and the highest point on the Ferris wheel are opposite each other, the difference of height will be the distance between the two points, and thus, the distance across fo the Ferris wheel. Divide this value by (2) to find the radius of the strucutre.
75 - 12
= 63
63 / 2
= 31.5
Lin has a die with 6 sides, each labeled 1, 2, 3, 4, 5, and 6. What is the probability that she will roll a 3? *
Answer:
Probability of rolling number 3 = [tex]\frac{1}{6}[/tex]
Step-by-step explanation:
Lin has a die with 6 sides.
Each side of the die is labeled with 1, 2, 3, 4, 5 and 6.
Since, probability of rolling any number = [tex]\frac{\text{Favorable event}}{\text{Total number of events}}[/tex]
Therefore, probability of rolling number 3 = [tex]\frac{\text{Favorable event}}{\text{Total number of events}}[/tex]
Favorable event of getting 3 in single roll = 1
Total events that can happen in one roll = 6
Therefore, probability of rolling number 3 = [tex]\frac{1}{6}[/tex]
GIVING BRANLIEST 5 STARS AND A LIKE PLS HELP IM SOOOOO STUCK
b) If the base of the panel is 31.2 inches and the height is 18 inches, what is the area of one triangular section?
What is the formula with these numbers plugged in? --
Answer --
Answer:
280.8 and the formula is Base x Height = ? x.5
Step-by-step explanation:
(31.2 x 18) x 0.5 =280.8