11/21
b/t/w you con go on this website called calculator soup and it has fraction calculators
and the website it self has nothing to download im pretty sure it doesnt
A large firm that owns a chain of grocery stores wanted to see if they could increase the average number of patrons who visit by implementing a rewards member program. To test this, they randomly chose half of their 60 locations and started the rewards program only at those locations, while the other half of locations did not receive the rewards program. They also collected information the amount of money spent on these extra customers. Which of these answers represents an element of randomization in this study?
a. use a computer program to select the locations have a rewards program and those that don't
b. have an unbiased person just pick half of the stores to have the rewards program
c. allow store managers to volunteer
Answer:
a. use a computer program to select the locations have a rewards program and those that don't.
Step-by-step explanation:
Randomization refers to an important statistical procedure used to eliminate bias in a study. With randomization, all subjects in the study possess equal chances of being selected. In the study scenario described above, randomly choosing half of their total location to partake in the reward program would involve the use of a technique which isn't liable of introducing bias into the study either deliberately or systematically. The use of store managers or other human in the selection process won't be totally convincing at preventing bias. Hence, a computer program will do.
A large firm that has a chain of the grocery stores has implemented a reward member program to increase the visits of patrons. In order to check this, they test the same at 60 different locations.
They do this by collecting information about the money spent and the number of customers Hence they use a computerized program that allows for asking reward programs and checks those who are eligible for the rewards. The store manager of the chain store has placed such as system in place. This system is simple as it tracks those who have not yet got the rewards by checking their information.Hence the option is A is correct.
Learn more about the firm that owns a chain of grocery stores wanted to see.
brainly.com/question/12385859.
Another math question.
Answer:
65536
Step-by-step explanation:
(4^3)^2×4^2
4^6×4^2
4^8
65536
If the answer is not integer, enter it as a fraction in the simplest from
- 3/2 • 8/6 divided by (- 2/15)
Answer:
15
Step-by-step explanation:
1) multiply numerator x numerator and denominator x denominator
- 24/12
2) simplify the fraction
-24 : 12 = -2
12 : 12 = 1
-2/1 = -2
3) inverte the therms of -2/15 and change the sign of operation from : to x
- 2 x (-15/2)
4) multiply the numerators remembering that minus x minus = +
30/2
5) simplify the fraction
30 : 2 = 15
2:2 = 1
15/1 = 15
Maddy and Jake create a game for the school fair.
Contestants should spin the wheel and if the spinner lands on a red section, the contestant wins a prize. Based on the theoretical probability of winning (12.5%), how many winners should Maddy and Jake expect if they have 200 contestants?
Answer:
25 winners
Step-by-step explanation:
MUST HELP!!!! (+50 POINTS +BRANILEST +5 STARS +THANKS ON PROFILE)
Answer:
Personification is your answer.
Hope it helps!!!
$2,500 at 6% for 3 years
Answer:
2500+6% per year for 3 years would be 2950.
if f(x)=3x^2-2x+1 find f(-2)
Answer:
17
Step-by-step explanation:
3(-2)^2 - 2(-2) + 1
12 - 2(-2) + 1
12 + 5
17
Answer:
f(-2) = 3(-2)² - 2(-2) + 1 = 17
Step-by-step explanation:
f(x) = 3x² - 2x + 1
f(-2) = 3(-2)² - 2(-2) + 1
= 3 × 4 + 4 + 1
= 12 + 5
f(-2) = 17
Thus, f(-2) = 3(-2)² - 2(-2) + 1 = 17
-TheUnknownScientist
Simplify the expression Z^0⋅(Z^2⋅Z^−5)^4 using positive exponents
possible answers:
a.)Z^81
b.) 0
c.) 1/Z^12
d.) 1/Z^40
Find the area and perimeter of the following figure.
Answer:
AREA: 49.2 miles
PERIMETER: 49.2
Step-by-step explanation:
in finding the area, multiply by 4 the same because it has the same sizes, A=s⁴ or Side x side x side x side
In finding the Perimeter
you need to add 12.3 miles to four sizes or same sizes
P= 12.3 + 12.3 + 12.3 + 12.3
Please help me with this!! I don’t understand it at all (trigonometry)
Hi there!
[tex]\large\boxed{cos(\frac{\theta}{2} )= \frac{3}{\sqrt{7}}}[/tex]
[tex]\large\boxed{tan(\frac{\theta}{2}) = \frac{\sqrt{5}}{3}}[/tex]
Begin by recalling that:
sin(θ) = O/H, so:
Opposite side = 3√5
Hypotenuse = 7
We can solve for the adjacent sign using the Pythagorean Theorem:
7² = (3√5)² + b²
49 = 45 + b²
b² = 4
b = 2.
Thus, cosθ = 2/ 7
Use the half angle identity to solve for cos(θ/2):
cos(θ/2) = √(1 + cosθ)
Plug in the value of cosθ:
= √(1 + 2/7) = √9/7, or 3 /√7
Thus:
[tex]cos(\frac{\theta}{2}) = \frac{3}{\sqrt{7}}[/tex]
Calculate tan(θ/2) using the same process but with a different formula:
tan(θ/2) = √(1 - cosθ / 1 + cosθ)
Substitute in the value of cosθ:
tan(θ/2) = √(1 - 2/7)/(1 + 2/7)
= √(5/7)/(9/7) = √5/9 = √5/3
HEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPP
Answer:
triangle and cylinder is your answer
Reading the directions to a test is important because
a. The directions may help you from being C. The directions explain what the teacher is
confused about how to answer a question thinking
b. The directions can give you the answers to a d. All of these
test
Please select the best answer from the choices provided
Ο Α
ОВ
Ос
OD
Answer:
It's C
Step-by-step explanation:
The directions explain what the teacher is thinking (the way they tell us to do the test without saying it). Directions are good because you can reread them in case your forgot :-/
Point T has coordinates (-3, 4). If it was reflected over the x-axls, what were the coordinates of its pre-image?
Answer:
(3,4)
Step-by-step explanation:
No links No pdfs No wrong answer or I report
people say its D then the computer say its B (sometimes computer make mistakes) so can someone clarify if its B or D
Answer: 4, 4
Step-by-step explanation: this is on g.oo.g.le
Dawn is verifying the accuracy of her paycheck. She
earns $14 an hour and works 40 hours each week.
Her biweekly deductions are Social Security 6.2%,
Medicare 1.45%, federal withholding tax $73.25,
state withholding tax $22.50, and health insurance
$37.45. What is her annual net pay if she is paid
biweekly
This is for financial algebra senior year high school. If anyone can help me understand this and please no random links
Answer:
$753.34
Step-by-step explanation:
trust me it is $753.34
The function F(x)=2^x is shifted 4 unit left . The results is g(x). what is g(x)
Answer:
ID-=35'-
Step-by-step explanation:
What’s the answer? Please help me!
Answer:
x = 4
y = 4√3
tan 60° = 1.7321
Step-by-step explanation:
sin 30 = 4/8
0.5 = x/8
x = 4
y² = 8² - 4² = 64 - 16 = 48
y = √48 = 4√3
tan 60° = (4√3)/4 = √3 = 1.7321
is X greater than less than or equal to 106 degrees
Answer:
Less
Step-by-step explanation:
what is the area of the triangle
Answer:
90units²
Step-by-step explanation:
area of a triangle= ½base *height
area = ½*12*15
area= 90units²
List three terms that are like the given terms below.
- 19m
28
42bc
2r
Answer:
chicken
Step-by-step explanation:
3
Select the correct answer from each drop-down menu.
A cross section is the intersection of a
✓ and a
Answer: three dimensional figure and plane.
Step-by-step explanation:
A cross section is the intersection between a (three dimensional figure) and also a (plane).
When an object is being cut straight, the shape that we get is referred to as the cross section. We should note that several parallel cross sections will be firmed when we cut a particular object into slices.
what is the formula for varience
Answer:
S^2 = sample variance
x_i = the value of the one observation
\bar{x} = the mean value of all observations
n = the number of observations
Step-by-step explanation:
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean. In other words, it measures how far a set of numbers is spread out from their average value.
hope i helped:)
Find value of x round to the nearest tenth
Answer:
3
Step-by-step explanation:
3 is half of 6 and 6 is the total of that line
3 is also the radius of the circle
Determine if the side lengths given form a triangle. Justify your response. 4ft, 8ft, 12ft
Answer:
No, the sum of the two smaller sides must be greater than the longer side.
In this case this would be just a straight line.
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
The given lengths won't form a triangle. The sum of the 2 smaller sides should be greater (not equal too) than the longest side.
so, the longest side her is 12ft
so the smaller sides are 4ft, and 8ft.
the sum of this two sides is 12ft which same as longest side (not greater)...
so it won't form a triangle, here it will just form points on lines.
thankshope it helpsUse a graphing tool to graph the function and complete the sentences based on the graph of the function f (x) = StartLayout Enlarged left-brace first row StartFraction 3 Over x EndFraction, x less-than 1 second row 3, x greater-than-or-equal-to 1 EndLayout.
The function has a point of discontinuity when x =
where, from the left, the function approaches
.
Answer:
0, negative infinity
q + 601 = –104 what is the answer
Answer:
Q + 601 = -104
Subtract 601 from both sides
Q = -705
Answer: -705
Step-by-step explanation:
q+601=-104
q=-104-601
q=-705
What point's coordinates will not change signs whether it is reflected over the x-axis or the y-axls?
Answer:
The origin (0,0)
Step-by-step explanation:
A printer Prints 4 pages vper minute. How long would it take to print 204 pages
Answer:
divide 4 by 204 and that's your answer
Find the exact value of x
Answer:
5
Step-by-step explanation:
The Student Monitor surveys 1200 undergraduates from 100 colleges semiannually to understand trends among college students. Recently, the Student Monitor reported that the average amount of time spent per week on the Internet was 19.0 hours. You suspect that this amount is far too small for your campus and plan a survey. You feel that a reasonable estimate of the standard deviation is 10.0 hours. What sample size is needed so that the expected margin of error of your estimate is not larger than one hour for 95% confidence
Answer:
A sample size of 385 is needed.
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
You feel that a reasonable estimate of the standard deviation is 10.0 hours.
This means that [tex]\sigma = 10[/tex]
What sample size is needed so that the expected margin of error of your estimate is not larger than one hour for 95% confidence?
A sample size of n is needed. n is found when M = 1. So
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
[tex]1 = 1.96\frac{10}{\sqrt{n}}[/tex]
[tex]\sqrt{n} = 1.96*10[/tex]
[tex](\sqrt{n})^2 = (1.96*10)^2[/tex]
[tex]n = 384.16[/tex]
Rounding up:
A sample size of 385 is needed.