Answer:
b
Step-by-step explanation:
When a virus is placed on a tobacco leaf, small lesions appear on the leaf. To compare the mean number of lesions produced by two different strains of virus, one strain is applied to half of each of 8 tobacco leaves, and the other strain is applied to the other half of each leaf. The strain that goes on the right half of the leaf is decided by a coin flip. The lesions that appear on each half are then counted. The data are given below:
Leaf Strian 1 Strain 2
1 31 18
2 20 17
3 18 14
4 17 11
5 9 10
6 8 7
7 10 5
8 7 6
What is the number of degrees of freedom associated with the apropriate t-test for testing to see if there is a difference between the mean number of lesions per leaf produced by the two strains?
a. 7.
b. 8.
c. 11.
d. 14.
e, 16.
Answer: a. 7
Step-by-step explanation: Degrees of Freedom is the number of values "allowed" to vary. For example:
In the experiment above, the sample has 8 tobacco leaves. Two strains will be applied to each leaf. The decision of which strain goes to the right or left is random. Each strain have 7 possible leaves it can be applied, because, for the last, the eight leaf, there is no choice.
Therefore, the degrees of freedom for this experiment is 7.
It can also be calculated as
df = n - 1
df = 8 - 1
df = 7
Please help, I will give brainliest, I am struggling badly.
Answer:
1 solution
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Question 9 of 10
What is the value of n?
11330
nº
1142°
A. 810
O B. 38°
C. 47°
D. 850
Answer:
n = 85
Step-by-step explanation:
Sum of supplementary angles = 180°
A map of a park is created on a coordinate plane. Each until on the map represents 1 kilometer. A tennis court is located at (0, 4). An eating area is located at (-3 -1) A dog is located at (-3, 4).
Answer:
Jul 11, 2016 · - Gush Tela, a 54-year-old man who was forced to flee with his family after the town of Humera, located in Ethiopia's Tigray region, was shelled by the Ethiopian Army. He was describing the scene he encountered as he returned to the town several days later; he and his family are now in a refugee camp in Sudan (as quoted on The Guardian )
Step-by-step explanation:
Down bad rn plz help
Answer:
[tex]8x - 7 = 7x + 22 \\ 8x - 7x = 7 + 22 \\ x = 29 \\ kj = 7 \times x \\ 29 \times 7 \\ = 203[/tex]
Step-by-step explanation:
plz mark me as brainliest plzzzzz
4. Cassie has a total of 110 coins in her piggy bank. All the coins are q
total value of $20.30. How many quarters and how many dimes are
Solution:
Reply Reply all Forward
Answer:
b
Step-by-step explanation:
its easy
Answer:
there are 62 quarters and 48 dimes
Step-by-step explanation:
d + q = 110......d = 110 - q
0.10d + 0.25q = 20.30
0.10(110 - q) + 0.25q = 20.30
11 - 0.10q + 0.25q = 20.30
-0.10q + 0.25q = 20.30 - 11
0.15q = 9.30
q = 9.30/0.15
q = 62 <==== there are 62 quarters
d = 110 - q
d = 110 - 62
d = 48 <==== there are 48 dimes
Calculate slope
(0,-3), (-4,7)
Answer:
Step-by-step explanation:
(7 + 3)/(-4 - 0) = 10/-4 = -5/2
A triangular window is above the door to a café. The base of the window is 12 feet, and the height is 10 feet.
What is the area of the window?
Answer:
Your answer is 60
Hope that this is helpful. Tap the crown button, Like & Follow me
Answer: Hello! Your answer is.....
The area of the triangle is 60.
Step-by-step explanation:
12 x 10 = 120
120/2 = 60
Hope this helps!♥
Sorry this is late.
Please help, I will give brainliest, I am struggling badly.
Answer:
Step-by-step explanation:
Answer:
im pretty sure the answer is "infinite solutions" hope this helps
Which shows the distributive property?
5x+2= 2+5x
5(x+2) = 5x+10
5(x+2)= 5(2+x
Answer:
5(x+2) = 5x+10
Step-by-step explanation:
Solve step by step:
n + 8 = -10
Answer:
n=-18
Step-by-step explanation:
subtract 8 from both sides.
then you do -10 subtracted by 8 and thats -18.
PLEASE HELP I WILL GIVE BRAINLEST.
Answer:
it would be 6*7=42 plus (13-7)*(6-3)/2 which equals 9, so 42+9=51
Rachel received 5/8 of the 72 vote cast for class president. How many votes did she receive
Answer: Rachel recieved 45 votes.
Step-by-step explanation: Any easy way to solve this is to has the demonimator equal the total amount of votes. So in the questions, 8 is the denominator and 72 is the total amount of votes. To get from 8 to 72, you need to multiple 8 by 9. And whatever you do to the denominator, you must do to the numerator. So, 5 times 9 equal 45 which is the number of votes Rachel recieved.
Camilla walked 456 feet in the forest. How many yards did Camilla walk?
Answer:
152 yards
Step-by-step explanation:
456 divided by 3 equals 152
Answer:
456 feet equal 152 yards
Step-by-step explanation:
Solve For X. Please add an explanation.
Answer:
Your answer is 2.5
Hope that this is helpful. Vote and like it
Solve p
0.6p+4.5=22.5
I need an answer before 11:59 pm
The student council at mountain view high school plans to conduct a survey to determine the student body's opinion of the new lunch menu. Which of the following sampling methods would be most likely to result in UNDERCOVERAGE bias?
A. Setting up a booth in the lunchroom where students can give their thoughts
B. Obtaining an alphabetical list of all students and surveying every 10th student
C. Handing out a questionnaire to seniors only
D. Handing out a survey to the first 50 students entering the cafeteria at lunch
Answer:
c
Step-by-step explanation:
just did it on a.pex
you made a 12 minute call using a calling card. The call costs $0.66. there is a $1.21 left on your card. if the rate stays the same, how many more minutes can you talk for using the card
A movie-streaming service charges $3.75 to watch a
movie. The following year, the price increases to
$5.25. What is the percent increase in the cost to
stream a movie?
Answer:
5.25 is a 40% increase of 3.75.
Step-by-step explanation:
Percentage of increase = |3.75 - 5.25|/3.75 = 1.5/3.75 = 0.4 = 40%
If the probability of an event is 0.39, what is the probability of its complement?
Answer:
Step-by-step explanation:
p'=(1-0.39)=0.61
Look at the question
Answer:
Step-by-step explanation:
The better buy is the one where you get more area of pizza per dollar (area/price).
Since the problem gives diameter, we assume the pizzas are circle-shaped.
Circle Area = pi x (radius)², and radius r = 1/2 of diameter d.
*************************************************************************************
Pizza 1: d = 8 and price is $10
r = 1/2 x d = 4
Area of Pizza 1 = πr² = π(4)² = 16π
*** area/price for Pizza 1 = 16π/$10 = 1.6π area per dollar
**********************************************************************************
Pizza 2: d = 14 and price is $16
r = 1/2 x d = 7
Area of Pizza 2 = πr² = π(7)² = 49π
*** area/price for Pizza 2 = 49π/16 = 3.0625π area per dollar
***********************************************************************************
Pizza 2 is the better buy, with more pizza per dollar.
1/4( 16x-8)-8x= -1/3 ( ? x+9)
What is the only value you can substitute to have no values of x?
What number would I need to change 9 to have all values of x?
Answer:
d.16
Step-by-step explanation:
Can anyone help me???
Answer:
x=14√3
y= 28
Step-by-step explanation:
Below i've attached a 30-60-90 triangle
we can see from the picture that the side length opposite from 30 is just a
which means at a=14
The hyp is equal to 2a= 28
and x is equal to 14√3
1. MGSE.9-12.G.C. 2
A GRV is inscribed in a circle as shown the figure below. In AGRV, GR is congruent to GV. What is the
measurement of GR?
G
/200
A. 20°
B. 160°
C. 130°
D. 700
The angle sum of a triangle is 180 degrees. The measure of the angle GR is 160° then the correct option is B.
What is a circle?It is a locus of a point drawn an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.
A ΔGRV is inscribed in a circle as shown in the figure below.
In ΔGRV, GR is congruent to GV.
Then the angle ∠V and ∠R are also equal.
The sum of the angle of the triangle is 180 degrees. Then angles ∠V and ∠R will be
∠V = ∠R = 80°
We know theorem
An arc of a circle subtends twice the angle it subtends anywhere on the circle's circumference at its center.
Then the measure of the angle GR will be
→ 2 × 80°
→ 160°
More about the circle link is given below.
https://brainly.com/question/11833983
#SPJ2
given h(x) = 5x -1, find h(1).
The required value of h(1) for the function h(x) = 5x -1 is 4.
Given that,
A polynomial function is given h(x) = 5x -1, it value at x = 1 ios to be determined.
Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.
What is a polynomial function?A polynomial function is a function that applies only integer dominions or only positive integer powers of a value in an equation such as the quadratic equation, cubic equation, etc. ax+b is a polynomial.
Here, according to the question
function h(x) = 5x -1
at x = 1
h(1) = 5(1) - 1
= 5 - 1
= 4
Thus, the required value of h(1) for the function h(x) = 5x -1 is 4.
Learn more about polynomial function here:
https://brainly.com/question/12976257
#SPJ2
Kala will rent a car for a day. The rental company offers two pricing options: Option A and Option B. For each
pricing option, cost (in dollars) depends on miles driven, as shown below.
no 1
Option A
Option 3
Cost
10
(in dollars)
TO
Miles driven
Х
5
?
(a) If Kala drives the rental car 300 miles, which option costs more?
Option A Option B
How much more does it cost than the other option?
so
(b) For what number of miles driven do the two options cost the same?
If Kala drives more than this amount, which option costs more?
Option A Option B
The radius of a sphere is increasing at a rate of 4 mm/s. How fast is the volume increasing (in mm^3/s) when the diameter is 60 mm
Answer:
The volume is increasing at a rate of 1508 cubic millimeters per second when the diameter is 60 mm.
Step-by-step explanation:
Volume of a sphere:
The volume of a sphere is given by the following equation:
[tex]V = \frac{4\pi r^3}{3}[/tex]
In which r is the radius.
Implicit derivatives:
This question is solving by implicit derivatives. We derivate V and r, implicitly as function of t. So
[tex]\frac{dV}{dt} = 4\pi r^2 \frac{dr}{dt}[/tex]
The radius of a sphere is increasing at a rate of 4 mm/s.
This means that [tex]\frac{dr}{dt} = 4[/tex]
How fast is the volume increasing (in mm^3/s) when the diameter is 60 mm?
This is [tex]\frac{dV}{dt}[/tex] when [tex]r = \frac{d}{2} = \frac{60}{2} = 30[/tex]. So
[tex]\frac{dV}{dt} = 4\pi r^2 \frac{dr}{dt}[/tex]
[tex]\frac{dV}{dt} = 4\pi*(30)^2*4[/tex]
[tex]\frac{dV}{dt} = 1508[/tex]
The volume is increasing at a rate of 1508 cubic millimeters per second when the diameter is 60 mm.
A car dealership decreased the price of a certain car by 12%. The original price was $37,400.
(a) Fill in the blank to write the new price in terms of the original price. Write your answer as a decimal.
New=price × Originalprice
(b) Use your answer in part (a) to determine the new price.
Newprice:$
Answer:
$32912
Step-by-step explanation:
new price = price decrease × original price
new price = 0.88 × 37400
37400 decrease 12% =
37400 × (1 - 12%) = 37400 × (1 - 0.12) = 32912
During summer vacation Amanda ran a lemonade stand she bought a total of 65 lemons each bottle of lemonade need six lemons how many full batches can she make
Answer:10
Step-by-step explanation:
HELP BRAINLIEST IF RIGHT
Answer:
x<2.93
Step-by-step explanation: