Answer:
Kindly check explanation
Step-by-step explanation:
An appropriate research design which may be employed is to perform a random assignment of the 150 students into two groups whereby a certain group is made to perform the jumping exercise and the other group sitting still for 5 minutes, after this concentration level is measured in both groups in other to evaluate if there are differences in concentration levels between the two groups.
Given the hypothesis :
H0: There is no difference in the mean improvement of long-term concentration for either treatment.
Ha: The mean improvement of long-term concentration is greater for the jumping jacks treatment.
A type 1 error occurs when a true null is rejected ; this means that we conclude that The mean improvement of long-term concentration is greater for the jumping jacks treatment when this is actually not true. Hence, students will be allowed to do jumping jack in class but there won't be any improvement.
A type 11 error occurs when we fail to reject a false null hypothesis ; Hence, we conclude that There is no difference in the mean improvement of long-term concentration for either treatment when the jumping Jacks treatment actually does improve concentration level. Hence, the school will fail to allow students do jumping jack in class.
In my opinion, type 11 error is more serious in this scenario because, the school would have failed to identify and ignored a treatment which makes it's students attain a better level of concentration.
Casey boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple revolutions. The Ferris wheel rotates at a constant angular speed of 5.6 radians per minute and has a radius of 50 feet. The center of the Ferris wheel is 55 feet above the ground. Let t represent the number of minutes since the Ferris wheel started rotating.
a. Write an expression (in terms of t) to represent the varying number of radians θ Ryan has swept out since the ride started.
b. Write an expression (in terms of t) to represent Ryan's height (in feet) above the ground.
Solution :
It is given that :
Casey boarded a Ferry wheel at position of 3 'o' clock.
The angular speed of the Ferry wheel = 5.6 radians per minute
The radius of the Ferry wheel = 50 feet
The height of the center wheel of the Ferry from the ground = 55 feet
Let the number of minutes be = t
a). The expression of the varying number of radians θ is given by :
After t minutes, θ = angle swept
θ = 5.6 t radians
b). Finding the height from the center of the wheel.
We know that : y = r sin θ
Given r = 50 feet
So, y = 50 sin (5.6 t) feet
Therefore, the height above the ground can be found by :
h = y + 55 (from ground)
h = 50 sin (5.6 t) + 55 feet
please help, me and my friend need help answering this question ;)
Answer:
[tex] 12\frac{8}{9} [/tex] cm
Step-by-step explanation:
Perimeter of the rectangle = 2(length + width)
length = 3⅚ cm
width = [tex] 2\frac{11}{18} [/tex] cm
Thus:
Perimeter = [tex] 2(3\frac{5}{6} + 2\frac{11}{18}) [/tex]
Change the fractions to improper fractions
Perimeter = [tex] 2(\frac{23}{6} + \frac{47}{18}) [/tex]
Add
= [tex] 2(\frac{69 + 47}{18} [/tex]
= [tex] 2(\frac{116}{18} [/tex]
= [tex] \frac{116}{9} [/tex]
= [tex] 12\frac{8}{9} [/tex] cm
Jessica's teacher asked her to divide 5/8 of the box of crayons
among 10 classmates. How much of a box of crayons did
each one receive?
Answer:
Each classmate received 1/16
Step-by-step explanation:
5/8= 0.625
0.625 ÷ 10 = 0.0625
= 1/16
Calculate the volume of this prism.
Which expression is equivalent to 7a2b + 10a2b2 + 14a2b3?
ab(7a2 + 10ab + 14b2)
a2b(7 + 10b + 14b2)
7a2(b + 3b2 + 7b3)
7a2b3(b2 + 3b + 7)
(Freepoints)
[tex]{a}^{2} b \: (7 + 10 \: b + 14 \: {b}^{2} )[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]
[tex]7 \: {a}^{2} b + 10 \: {a}^{2} {b}^{2} + 14 \: {a}^{2} {b}^{3} \\ = {a}^{2} b \: (7 + 10 \: b + 14 \: {b}^{2} )[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]
...................have a great day!
work out the area of the shaded shape
Answer:
theres no photo :))) btw God bless you
Find the exact value of x.
Answer:
7[tex]\sqrt{2}[/tex] or 9.89
Step-by-step explanation:
sin45= [tex]\frac{7}{x}[/tex]
x=[tex]\frac{7}{sin 45}[/tex]
x= 7[tex]\sqrt{2}[/tex] or 9.89
An expression is shown. Which one of the expressions below is equivalent?
Answer:
C
Step-by-step explanation:
Jill Accardo, M.D., maintains the accounting records of Accardo Clinic on a cash basis. During 2020, Dr. Accardo collected $142,600 from her patients and paid $55,470 in expenses. At January 1, 2020, and December 31, 2020, she had accounts receivable, unearned service revenue, accrued expenses, and prepaid expenses as follows. (All long-lived assets are rented.) January 1, 2020 December 31, 2020 Accounts receivable $9,250 $15,927 Unearned service revenue 2,840 4,111 Accrued expenses 3,435 2,108 Prepaid expenses 1,917 3,232 Instructions Prepare a schedule that converts Dr. Accardo’s “excess of cash collected over cash disbursed” for the year 2020 to net income on an accrual basis for the year 2020.
Answer and Step-by-step explanation:
The preparation of the schedule is presented below:
Jill Accardo, MD
Conversion of Income Statement
from Cash Basis to Accrual Basis
For the Year 2020
Particulars Cash Adjustments Accrual
Basis Add Deduct Basis
Revenue from
fees: $142,600
Determine the area for the figure below.
Answer:
Area = 18
Step-by-step explanation:
Trapezoid formula is Area = (a + b) * h/2
Area = 5 + 7 * 3/2
Area = 18
which of the statements below best describes the transformation of the graph of
−
f
(
9
x
)
?
Answer:
The transformation of the graphs is that of an expansive one as can be depicted by a value being multiplied onto the graph. This refers to an increase in the output value by the factor essentially spreading the graph out abroad.
please help fast, I will mark BRAINLIEST 10. Find the rule. *
Х
3
Y
5
6
4
6
8
10
O y = x + 1
O y = x + 2
O y = 2x - 1
O y = 2x
Answer:
the answer to the question is y=x+2.
JS
Find the surface area of this prism.
Round to the nearest tenth.
6.72 cm
5.78 cm
12.7 cm
[ ? ]cm?
Enter
Answer:
[tex]Area = 395.2cm^2[/tex]
Step-by-step explanation:
Given
The attached prism
Required
The surface area
This is calculated as:
[tex]Area= 2(LW + LH + WH)[/tex]
Where:
[tex]Length \to L=5.78[/tex]
[tex]Width \to W=12.7[/tex]
[tex]Height \to H=6.72[/tex]
So, we have:
[tex]Area = 2(5.78 * 12.7 + 5.78 * 6.72 + 12.7 * 6.72)[/tex]
Using a calculator, we have:
[tex]Area = 395.1832[/tex]
[tex]Area = 395.2cm^2[/tex] ---- approximated
Which phrase best describes this polygon?
convex hexagon
concave dodecagon
convex dodecagon
concave hexagon
The correct phrase which is best describes this polygon is,
⇒ Convex Hexagon
What is mean by Angle?An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.
Given that;
The figure of hexagon is shown.
Since, We know that;
All of its interior angles must be less than 180 degrees, and all the vertices are pointed outwards is called ''Convex Hexagon''.
Here, By graph of figure;
All of its interior angles must be less than 180 degrees, and all the vertices are pointed outwards.
Hence, The correct phrase which is best describes this polygon is,
⇒ Convex Hexagon
Thus, The correct phrase which is best describes this polygon is,
⇒ Convex Hexagon
Learn more about the angle visit:;
https://brainly.com/question/25716982
#SPJ7
What natural numbers is the solution to these 3 problems
Answer:
according to me 4 is the answer
Step-by-step explanation:
A teenager earns $10 for every 600 square feet mowed in addition to $12 for supplies for each lawn he mows. Which function represents y, the teenager’s pay when he mows a lawn that is x square feet in size?
y = 10x + 600
y = 10x + 12
y = 1/60x + 12
y = 1/60x + 1/60
Answer: b
Step-by-step explanation: 600 is the total so, just do 10x and 12
a water tank is filled with 10 gallons of water in 2 minutes. what is the volume of the water, in gallons, that is in the tank in 1 minute?
Answer:
5 gallons of water in 1 minute
Give all answer mark brainliest
Answer:
add 15
Step-by-step explanation:
Answer:
Answer
Step-by-step explanation:
1) z=3
2) n=(-10)
3)5=5/1=5*4/4
4) 12.2
5)13/3
6)9
7) 5
8) -21/5
9) -15/2
hope it will help you
The measure of ∠BAC is π/3 radians and the measure of ∠CAD is π/2 radians. What is the measure of ∠BAD?
9514 1404 393
Answer:
5π/6 radians
Step-by-step explanation:
The whole is the sum of the parts.
∠BAD = ∠BAC +∠CAD
∠BAD = π/3 + π/2 = π(2/6 + 3/6)
∠BAD = 5π/6
what is 65 x 264 + 81 - 94
Answer: 17,147
Step-by-step explanation:
Help???? Pleaseeeeeeeee.
Answer:
(x-3.5)2=15.25.
What is the equation of the line that passes through point (3, −1) and has a slope of 2?
Answer:
y = 2x - 7
Step-by-step explanation:
Look at the image: This is how I solved the problem
A jar contains 8 red marbles numbered 1 to 8 and 12 blue marbles numbered 1 to 12. It alse has 5 white marbles numbered 100, 200, 300, 400, and 500. A marble is drawn at random from the jar. Find the probability of the given event.
Answer:
Probability of red marbles = 8/25
Step-by-step explanation:
Complete question
A jar contains 8 red marbles numbered 1 to 8 and 12 blue marbles numbered 1 to 12. It alse has 5 white marbles numbered 100, 200, 300, 400, and 500. A marble is drawn at random from the jar. Find the probability of the given event.
a) The marble is red
Total number of marbles = 8+12+5 = 25
Probability of red marbles = total number of red marbles/Total marbles
Probability of red marbles = 8/25
What times 4 gives me 1/5
Answer:
0.05
Step-by-step explanation:
Because 1/5 divided by 4 gives you 0.05 or 1/20
After sales tax, a $260 fancy watch costs $286. What is the sales tax percentage?
Answer:
10%
Step-by-step explanation:
the difference between 260 and 286 is 26, which is 10% of 260 so 10%
PLEASE HELPPPPP
Ethan puts $1200 into a Certificate of Deposit (CD) account that earns 2.1% interest each year. What will be the interest of the CD account earned after 5 years? Round to the nearest cent (hundredths place).
Answer:
126
Step-by-step explanation:
1200x.021=25.20 interest per year
25.20 x 5 years = 126
assumes no compounding
ten more than x times 6 is 11 more than y times 4
Answer:
6x+10 = 4y+11
Step-by-step explanation:
6x+10 = 4y+11
The slope intercept form is:
y = 3/2x-1/4
Find the vertex of the graph of the quadratic function y=-2xto the 2-8x-16 and determine whether it is absolute maximum or absolute minimum
Answer: It's the absolute maximum, the vertex is (-2, -8).
Step-by-step explanation:
Just go to desmos graphing calculator and input the equation y = -2x^2-8x-16. You'll find the vertex and other things too.
A study records the lengths of pregnancy (in days) of 500 women. The data is normally distributed with a mean of 266 days and a standard deviation of 16 days. How many women in the study had a pregnancy between 250 days and 282 days in length?
Answer:
371 women had their pregnancy between 250 days and 282 days in length.
di po ako sure sa answer ko, but it is based on what I remembered.
Step-by-step explanation:
z=532-266
16
√500
= 371.74 or 371
what is 731.49 written in standard fotm to it power