Answer:
Pvalue > α ; We fail to reject the Null; hence no significant difference exists in the average prices of the two supermarkets.
(−68.1095 ; 57.8545)
Step-by-step explanation:
Given the data:
Week Advertiser ($) Competitor ($) 1 254.27 255.93 2 240.72 255.65 3 231.91 255.12 4 234.15 261.28
Difference, d :
254.27 - 255.93 = - 1 66
240.72 - 255.65 = - 14.93
231.91 - 255.12 = - 23.21
234.15 - 261.28 = - 27.13
d = -1.66, -14.93, 23.21, -27.13
Using calculator :
Mean difference , dbar = - 5.1275
Standard deviation of mean , Sd = 21.566
H0 : μd = 0
H1 : μd ≠ 0
Test statistic :
(dbar - μd) / s/√n
(-5.1275 - 0) / (21.566/√4)
-5.1275 / 10.783
= −0.475517
Using the Pvalue from Tscore Calculator ; df = 4 - 1 = 3
Pvalue = 0.66659
Pvalue > α ; We fail to reject the Null; hence no significant difference exists in the average prices of the two supermarkets.
Confidence interval :
dbar ± standard Error
Standard Error = Tcritical * Sd/√n
dbar = - 5.1275
Tcritical at 0.01 = 5.941
Standard Error = 5.8409 * 21.566/√4 = 62.982
Confidence interval :
Lower boundary : - 5.1275 - 62.982 = −68.1095
Upper boundary = - 5.1275 + 62.982 = 57.8545
(−68.1095 ; 57.8545)
The true population on difference exist within the interval
Determine the center and radius of the following circle equation:
x2 + y2 – 16x + 10y + 80 = 0?
Answer:
centre is (8, -5)
[tex]r = \sqrt{ {g}^{2} + {f}^{2} - c } \\ = \sqrt{64 + 25 - 80} \\ = \sqrt{9} \\ r = 3 \\ radius \: = \: 3 \: units[/tex]
P(x,y) reflection in x=y line
Answer:
P(x,y) reflection in x=y line:(y,x)
Add 473 base eight and 362 base eight
Answer:
1055
Step-by-step explanation:
473
+ 362
--------- 3 + 2 = 5, even in base 8
5
Now 7 + 6 = "thirteen" = 15 in base 8 so write 5 in the next column, carry 1
1
473
+ 362
---------
55
1 + 4 + 3 = "eight" = 10 in base 8. Write 0 in the next column, carry 1
1
473
+ 362
---------
1055
I need this answer today i will give you a crown and good raitings if you get it write and you give it to me today
Answer:Mean is 22. Median is 19. Mode is 31. Range is 18.
Step-by-step explanation:
Mean: add all the numbers and divide the answer by the number of numbers there were in the beginning.
31+16+13+19+31=110
110/5=22
Median: arrange the numbers in or Eder and find the middle
13,16,19,31,31
The middle is 19.
Mode: is the number that shows up frequently
Mode is 31 as it shows up twice
Range is the difference between the biggest and smallest number
31-13=18
18 is the range.
In your opinion, which step includes a mistake:
when solving the expression
(6 1/2 + 2 3/4)-1.5×(4.5÷0.5)
should ALL parentheses be included as step one, or one set in step one and another in step 2?
Answer:
yes Cecilia make her first mistake in step 2
Can you help me with this question??
9514 1404 393
Answer:
about 1.4288993 radians
Step-by-step explanation:
The angle to terminal arm A is ...
∠A = arctan((-4/5)/(-3/5)) ≈ 4.0688879 radians
The angle to terminal arm B is ...
∠B = arctan((-1/√2)/(1/√2)) ≈ 5.4977871 radians
Then the angle between the arms is ...
5.4977871 -4.0688879 ≈ 1.4288993 . . . radians
add the fractions and simplify the 2 1/4 + 5 5/6 + 3 2/3
Answer:
141/12
Step-by-step explanation:
A rectangle has a perimeter of 10 meters.
Choose all the possible dimensions of the rectangle.
A. 1 meter by 4 meters
B. 1 meter by 9 meters
C. 2 meters by 3 meters
D. 3 meters by 2 meters
E. 4 meters by 1 meter
F.5 meters by 5 meters
G. 9 meters by 1 meter
Answer:
A,C,D,E
Step-by-step explanation:
4+4+1+1= 10
2+2+3+3= 10
Look at the data below from two random samples of a 100 students favorite lunch food from two different schools. which of the following inferences can be made from the data above?
A. Students at Grant Middle School don't eat lunch
B. Above the same amount of pizza will be sold at both schools
C. More Students at Jackson Middle School prefer cheeseburgers
D. Students at Grant Middle School are three times more likely to purchase salad than Jackson Middle School.
Trying to understand why the answer is 5...
Pls help!!
Find the interquartile range.
Answer:
The Interquartile range is 5.
So, the answer is D.
Step-by-step explanation:
The 25th percentile: 4
The 50th percentile: 6
The 75th percentile: 9
I’ll give you five Stars
Which expression is equivalent to line l-5l + l3l?
-8
-2
2
8
Answer:
8
Step-by-step explanation:
|-5|+|3|
5+3
8
The National Collegiate Athletic Association (NCAA) cares about success for athletes both in their sports and in their education. Imagine a researcher hired by the NCAA wants to know how athletes' academic performance is affected by the stage of their competitive season. She examines performance in the pre-season, throughout the active competitive season, and post-season, having 150 athletes, from across several different sports, assessed during each period. What statistical analysis would be appropriate for this research
Answer:
a. one-way within-groups ANOVA
Step-by-step explanation:
Here, the research question meets the conditions required for a one-way within group ANOVA. One way within group anova allows for comparison between the mean of three or more groups or levels of one independent variable on a dependent variable. In the scenario above, the one independent variable is stage of the season with levels : (pre-season, throughout active season and post season) and the dependent variable being the athletes academic performance. It is a within group ANOVA as all subjects are used to test each level of the independent variable. Which is different from between groups where different subjects are assigned to different groups.
oscar had a long piece of string he cut it into 12 pieces each piece is 12.4 cm long how much string did he have to begin with solve the equation s/12 = 12.4
F. 0.97
G. 1.03
H. 148.8 cm
J. 149.2
Answer:
The answer is F. 0.97
Hope it helps you!
Step-by-step explanation:
help lol plsssss!!?!?
Answer:
3y-x =-6
Step-by-step explanation:
The equation of a line in point slope form is expressed as;
y-y0 = m(x-x0)
(x0, y0) is the point = (3, -1)
Given the equation 3xs+y = 1
Get the slope
y = -3x + 1
mx = -3x
m = -3
Since the equation needed is perpendicular to the line, the slope will be expressed as;
M = -1/-3
M = 1/3
Substitute and get the equation needed
y-y0 = m(x-x0)
y - (-1) = 1/3(x-3)
y+1 = 1/3(x-3)
3(y+1) = x-3
3y+3 = x-3
3y - x = -3-3
3y-x =-6
This gives the required equation
Question 9 (5 points)
Simplify 4V256.
O A) 3
OB) 4
C) 5
OD 7
What is the volume of the cylinder below?
Answer:
Step-by-step explanation:d
PLS ANSWER. 215 + (--57) =
Answer:
C. 158
Step-by-step explanation:
215 + (- 57)
215 - 57
158
Answer:
Option C, 158
Step-by-step explanation:
This is the same as expression: 215 - 57
So the answer would be: 158
Hope this helps!
What is the scale factor from AABC to AXYZ?
y
B
30
24
5
4
A 3C
18
N
A.
lco
O B. 6
C. 5
Answer: B. 6 because it's the actual answer.
The scale factor from triangle ABC to XYZ is 6.
Option B is the correct answer.
We have,
From the triangles ABC and XYZ.
Corresponding sides are given as:
AB = 6 x (XY)
BC = 6 x (YZ)
AC = 6 x (XZ)
This means,
The scale factor is 6.
Thus,
The scale factor from triangle ABC to XYZ is 6.
Learn more about triangles here:
https://brainly.com/question/25950519
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Find the area of a circle whose radius is 3½m
Answer:
38.48m squared
Step-by-step explanation:
Area = pi x radius squared
So
3.5 squared is 12.25
12.25 x pi is 38.48
Solve for x & show steps
2000 = 400√x
x=25
Step-by-step explanation:
2000=400√x
Step 1: Flip the equation.
400√x=2000
Step 2: Divide both sides by 400.
400√x/400=2000/400
√x=5
Step 3: Solve Square Root.
√x=5
x=52(Square both sides)
x=25
Check answers. (Plug them in to make sure they work.)
x=25
A total of 423 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adult tickets sold. How many adult tickets were sold?
Under his cell phone plan, Alexander pays a flat cost of $69.50 per month and $5 per gigabyte. He wants to keep his bill under $85 per month. Write and solve an inequality which can be used to determine gg, the number of gigabytes Alexander can use while staying within his budget.
Answer:
3 gigabytes
Step-by-step explanation:
69.50 dollars + 5 dollars is 74.50 dollars add 5 dollars 79.50 add 5 dollars again and 84.50 Mark brainliest
Inequalities help us to compare two unequal expressions. Alexander can use 3 gigabyte of data to stay within his budget.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.
Given that Alexander pays a flat cost of $69.50 per month and $5 per gigabyte. Therefore, the total amount that Alexander pays in a month for x Gb of data used is,
Total Bill amount = Fixed cost + Variable cost for x Gb of data
= $69.50 + $5x
Now, as Alexander wants to keep his bill under $85 per month. Therefore, we can write the inequality as,
Total Bill amount < $85
69.50 + 5x < 85
5x < 85 - 69.50
5x < 15.5
x < 15.5/5
x < 3.1
Therefore, Alexander can use 3 gigabyte of data to stay within his budget.
Learn more about Inequalities here:
https://brainly.com/question/19491153
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What is the difference of 1 and 1/3 and 5/6??
Answer:
By using cross multiplication method, 1/2 is the difference between two fractions 5/6 and 1/3.
Step-by-step explanation:
Answer:
0.5
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
[tex]1\frac{1}{3}- \frac{5}{6}=\frac{1}{2}[/tex]
0.5
find tan 0 where 0 is the angle shown
Answer:
Because tan represents [tex]\frac{opposite}{adjacent}[/tex] from θ (theta), the equation should be [tex]tan0[/tex]=[tex]\frac{15}{x}[/tex]. Let's leave this equation like that. Now, we need to find the unknown side length, x. We need to use Pythagorean Theorem, because we're given the other two side lengths. The equation should be [tex]x^{2}+15^{2}=17^{2}[/tex]. X should equal ±8 or 8, because a side length can't be a negative value. Now, we can plug in 8 into the equation to get [tex]tan0=\frac{15}{8}[/tex].
Determine the level of measurement of the variable below.
Highest degree conferred (high school, bachelors, and so on)
Choose the correct answer below.
A. interval
B. ordinal
C. nominal
D. ratio
You have ten box's of ten muffins each, and each muffin has been blueberry. Use an exponent to write an expression for the total number of blueberries
Answer:
I'm pretty sure it's 10 to the power of 3.
Step-by-step explanation:
the ratio of the length of two similar re rectangles is 3 ratio 4. what is the scale ratio of their areas in
full solving
Answer:
9:16
Step-by-step explanation:
The ratio of sides of the lengths of rectangles is 3:4.
Now since the scale is constant. So the scale ratio of area will be square of the side ratio .That is :-
→ Ratio of Area = ( 3 : 4)²
→ Ratio of Area = (3/4)²
→ Ratio of Area = 9/16
→ Ratio of Area = 9:16
Hence the ratio of areas is 9:16 .Plz answer this correctly
9514 1404 393
Answer:
8 m
Step-by-step explanation:
The area of a circle of radius r is ...
A = πr²
The total area of the two circles is ...
80π m² = πr² +π(2r)² = 5πr²
r² = 16 m² . . . . . . . . . divide by 5π
r = 4 m . . . . . . . . . . . positive square root
The radius of the larger circle is 2r = 2(4 m) = 8 m.
Answer:
8 m is the answer.
Step-by-step explanation:
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