Answer:
not statistically significant at ∝ = 0.05
Step-by-step explanation:
Sample size( n ) = 61
Average for student leader graduates to finish degree ( x') = 4.97 years
std = 1.23
Average for student body = 4.56 years
Determine if the difference between the student leaders and the entire student population is statistically significant at alpha
H0( null hypothesis ) : u = 4.56
Ha : u ≠ 4.56
using test statistic
test statistic ; t = ( x' - u ) / std√ n
= ( 4.97 - 4.56 ) / 1.23 √ 61
= 2.60
let ∝ = 0.05 , critical value = -2.60 + 2.60
Hence we wont fail to accept H0
This shows that the difference between the student leaders and the entire student population is not statistically significant at ∝ = 0.05
The bar graph shows the height of a plant each month for four months. Your friend concludes that the height of the plant in Month 4 is 3
times its height in Month 1. Is this conclusion accurate? Explain.
Answer:
I can't see the pic or I can't answer sorry
Step-by-step explanation:
Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres per hour and the other travels at an average speed of 70 kilometres per hour. How long after they leave the station will they be 50 km apart?
9514 1404 393
Answer:
20 minutes
Step-by-step explanation:
The trains are separating at the rate of 80 +70 = 150 km/hour. The time required to be 50 km apart is then ...
time = distance/speed = (50 km)/(150 km/h) = 1/3 h = 20 minutes
A flying squirrel's nest is 12 feet high in a tree. From its nest, the flying squirrel glides 13 feet to reach an acorn
that is on the ground. How far is the acorn from the base of the tree? Draw a picture and show your work.
Answer: the answer should be 5
if you draw a right triangle 12 would be the line that goes up (A) and 13 would be the slanted line (C) so that leaves the bottom line to be C.
hope this helps!
Step-by-step explanation:
[tex]A^{2} +B^{2} =C^{2} \\12^{2} +B^{2} =13^{2} \\144+B^{2} =169\\-144 -144\\\sqrt{B^{2} } =\sqrt{25} \\ B=5[/tex]
What value of y makes the equation 3y+ 9 = 36 true?
Answer:
y=9
Step-by-step explanation:
A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.)2x^3 − 5x^2 − 28x + 15 = 0; {1/2}
Answer:
2x^3 − 5x^2
Step-by-step explanation:
What are some things that might be necessary to know in order to solve problems involving quadratic regression?
Answer:
When given a set of data, we can use our graphing calculator to generate the quadratic regression equation. This is the equation that best fits a set of data, using a quadratic model.
Step-by-step explanation:
got a 100%
The things which are necessary to know in order to solve problems involving quadratic regression are data, correlation coefficient and quadratic equation.
What is quadratic regression?The quadratic regression is the statistical process which is used to obtain the equation of parabola, to represent the data set in the most appropriate way.
The things which are necessary to know in order to solve problems involving quadratic regression are listed below.
The most important thing for approaching quadratic regression problem is visualize the data.Make a proper table with x and y values with the data. These values should form a parabola for the quadratic regression.Find the correlation coefficient. The closer the value of correlation coefficient to 1, the data good fit into the quadratic equation.Least square method is the best way to solve the problems involving quadratic regression.Thus, the things which are necessary to know in order to solve problems involving quadratic regression are data, correlation coefficient and quadratic equation.
Learn more about the quadratic regression here;
https://brainly.com/question/25794160
I have no idea what this question is asking
Answer:
I think it's $200 as well since it asks how much money was borrowed.
Step-by-step explanation:
if we subtract the smallest two digit number from the largest two digit number we get
Answer:
Largest two digit number - smallest two digit number
99-10
89
pls Mark as brainliest
Please help me i can’t solve this
Answer:
8 to the third power inches squared
Step-by-step explanation:
well
4 to the third power is
4 x 4 x 4 which equals 64
then
2 to the third power
2 x 2 x 2 = 8
64 x 8 = 512
finally
8 x 8 x 8 = 512
Jonathan is making 4 birdhouses. Each needs 7 3/4 feet of wood. How much wood is needed?
Answer:
31 feet of wood is needed
A tool box has the dimensions of 9 in by 3 in by 6 in. If Rick plans to double all three dimensions to build a larger tool box, he believes he would double the volume of the tool box. Is he correct?
Answer:
No; it will not double the volume of the box
Step-by-step explanation:
Someone help I WILL GIVE BRAINLIEST!!!!
Answer:
It is D
The one you have chosen is the correct answer.
Step-by-step explanation:
A fair cube has 2 blue sides, 2 red sides, and 2 green sides.
What is the probability of rolling a blue or red side?
Write an expression with the same meaning as "7 less than the square of a number."
Answer:
x²-7
Step-by-step explanation:
x²-7
Help plz I’ll mark brainliest
Answer:
The Answer Is A
Step-by-step explanation:
There are 40 people in a choir.
Half of the people in the choir are women.
The number of women in the choir is 5 times the number of
men in the choir.
The rest of the people in the choir are children.
the number of
children in the
choir
:
the number of
men in the choir
n : 1
Work out the value of n.
You must show how you get your answer.
n =
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Answer:
n = 4
Step-by-step explanation:
Of the 40 people, half are women, so there are 20 women.
There are 5 times as many women as men, so 20/5 = 4 are men.
The remainder are children, so there are 20-4 = 16 children.
The ratio of children to men is ...
children : men = 16 : 4 = 4 : 1 = n : 1 . . . . . . . . remove a factor of 4 from 16:4
The value of n is 4.
What is the measure of angle GXI?
Answer:
Step-by-step explanation:
GXI with three points sounds like a triangle and a triangle angle equals 180 degrees.
Add picture and I'll try to solve full problem
Guys!!! Please help!! Geesh I need help
Answer:
42
Step-by-step explanation:
9 - 4 = 5
8 - 5 = 3
9 + 2 + 3 + 7 + 8 + 3 + 4 + 6 = 42
Answer:
Its 42 ;l
Step-by-step explanation:
Can somebody please tell me the answers? This is due today and I’m stuck. Thanks!
answers / step-by-step explanation:
every single one of these equations false
3² = 2 * 2 * 2
is false since three multiplied by itself equals to 9 and 2 multiplied by itself 3 times equals to 8 and as you can see, they are not the same numbers
9 > 8
5^(3)=15
is also false since 5^(3) equals to 125 and 15 do not equal to each other since they are not the same number
125 > 15
8^(1 )=7^(1)
is the easiest one because it is basically just asking if 8 = 7 and to answer that question, it doesn't
8 > 7
hope this helps you and i hope i wasnt late! :)
find the distance between the two points
(1, 2), (-3, 5)
Answer:
13
Step-by-step explanation:
if you cannot find the awnser next time try mathaway it gives you the awnser and tells you an explanation.
If 70% of a number is 42 and 15% of the same number is 9, find 85% of that number.
Answer: 51
Step-by-step explanation:
let x be the number.
(70%)x = 42
0.7 x = 42
x = 60
we check 15% x 60 = 0.15 x 60 = 9, which is true.
85% of that number = 85% x 60 = 0.85 x 60 = 51.
Answer:
51
Step-by-step explanation:
Please help
See the picture
Answer:
6
Step-by-step explanation:
Gud luck
The graph of a line and and exponential intersect twice, once, or not at all. Describe the possible number of intersections of each of the following pairs of graph. Your solution to each part should include all of the possibilities and a quickly sketched example of each one. (Part 1)(SHOW WORK)
a. A line and a parabola
b. Two different parabolas
a) A line can intersect a parabola at 2 points, 1 point, or no points respectively. The only possible way at which it intersects at 1 point, would be if it were tangent to the parabola. [Check first attachment]
b) Two different parabolas can intersect at 2 points, 1 point or no points respectively. [Check second attachment]
It is possible for 2 parabolas to intersect at 4 and even 3 points. But one of the parabolas would be on it's side. You can consider those cases.
Solve triangle ABC. (Round your answers to one decimal place.)
∠A =
13.5
°
∠B =
63.9
°
∠C =
If 3 students eat 2 pizzas how many pizzas are needed for 54 students
Answer:
18 pizzas
Step-by-step explanation:
PLEASE HELP ILL MARK BRAINLIEST!!! Find the area & circumference of the circle. Use pi=3.14
Answer:
The circumference is either 31.2π OR ≈98.0176908. cm
The area is 243.36π cm^2 OR ≈764.537988 cm^2
I HOPE MY ANSWER HELPED PLEASE GIVE BRAINLIEST :)
Compute four-week and five-week moving averages for the time series. If required, round your answers to two decimal places. Week Sales 4 Period Moving Average 5 Period Moving Average 1 17 2 21 3 19 4 23 5 18 fill in the blank 1 6 16 fill in the blank 2 fill in the blank 3 7 20 fill in the blank 4 fill in the blank 5 8 18 fill in the blank 6 fill in the blank 7 9 22 fill in the blank 8 fill in the blank 9 10 20 fill in the blank 10 fill in the blank 11 11 15 fill in the blank 12 fill in the blank 13 12 22 fill in the blank 14 fill in the blank 15
Answer:
fill in the blank 1 =20
fill in the blank 2 =20.25
fill in the blank 3 = 19.4
fill in the blank 4 = 19.75
fill in the blank 5 =19.6
fill in the blank 6 = 19.25
fill in the blank 7=19.2
fill in the blank 8 = 18
fill in the blank 9= 19
fill in the blank 10 = 76/4=19
fill in the blank 11 = 18.8
Step-by-step explanation:
Week Sales 4 Period Moving Average 5 Period Moving Average
1 17
2 21
3 19
4 23
5 18 fill in the blank 1
=20
6 16 fill in the blank 2 fill in the blank 3
=20.25 19.4
7 20 fill in the blank 4 fill in the blank 5
19.75 19.6
8 18 fill in the blank 6 fill in the blank 7
19.25 19.2
9 22 fill in the blank 8 fill in the blank 9
18 19
10 20 fill in the blank 10 fill in the blank 11
76/4=19 18.8
11 15 fill in the blank 12 fill in the blank 13
20 19.2
12 22 fill in the blank 14 fill in the blank 15
18.75 19
The formula used for moving average is
a1= 1/4 ( W1+W2+W3+W4)
a2= 1/4 ( W2+W3+W4+ W5)
a3= 1/4( W3+W4+ W5+W6)
and so on
Where W1= week 1, W2= week 2 ,W3= week3
a1= 1st average , a2= 2nd average
The similar process is used for five year moving average
a1= 1/5 ( W1+W2+W3+W4)
a2= 1/5 ( W2+W3+W4+ W5)
a3= 1/5( W3+W4+ W5+W6)
Only it is divided by 5 instead of 4
To calculate the four-week and five-week moving averages, we need to sum up the sales for the specified number of weeks and divide by the corresponding period.
Week | Sales | 4-Period Moving Average | 5-Period Moving Average
-----|-------|------------------------|------------------------
1 | 17 | |
2 | 21 | |
3 | 19 | |
4 | 23 | |
5 | 18 | 20.00 |
6 | 16 | 19.25 |
7 | 20 | 19.50 |
8 | 18 | 19.25 |
9 | 22 | 19.00 |
10 | 20 | 19.00 |
11 | 15 | 18.75 | 19.20
12 | 22 | 18.75 | 19.20
13 | 22 | 19.75 | 19.40
14 | | 19.75 | 19.40
15 | | 19.75 | 19.40
The four-week moving average is calculated by summing up the sales of the current week and the previous three weeks, and then dividing by 4. The five-week moving average is calculated similarly, but with a period of five weeks.
A container that holds beans is shaped like a cylinder. The radius of the container is 9 centimeters, and the height of the container is 11.25 centimeters.Which measurement is closest to the volume of the container in cubic centimeters?
2862.78
954.26
715.69
238.5
Answer:
I can't tell you the answer but pi is 3.1415
In degrees, what is the measure of hmp
Please help, this is timed!
Please and thank you :)
For the following right triangle, find the side length x.