Words were displayed on a computer screen with background colors of red and blue. Results from scores on a test of word recall are given below. Use a significance level to test the claim that the samples are from populations with the same standard deviation. Assume that both samples are independent simple random samples from populations having normal distributions. Does the background color appear to have an effect on the variation of word recall scores?
n
s
Red Background
Blue Background
What are the null and alternative hypotheses?
A.
:
:
B.
:
:
C.
:
:
D.
:
:
Identify the test statistic.
F
nothing (Round to two decimal places as needed.)
Use technology to identify the P-value.
The P-value is
nothing. (Round to three decimal places as needed.)
What is the conclusion for this hypothesis test?
A.
. There is evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.
B.
. There is evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.
C.
. There is evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.
D.
. There is evidence to warrant rejection of the claim that the samples are from populations with the same standard deviation.
Does the background color appear to have an effect on the variation of word recall scores?
A.
, the variation of word recall scores appears to be when the color is changed.
B.
, the variation of word recall scores appears to be when the color is changed.
C.
, the variation of word recall scores appears to be when the color is changed.
D.
, the variation of word recall scores appears to be when the color is changed.
Help please I am begging
Answer:
The answer is A, 3.50w.
Step-by-step explanation:
When there is 1 pound, it is 3.50. 2 pounds it's 7.00 which is 3.50 times 2.
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In the morning, a group of hikers hiked 3 3/4 miles, took a break, and then hiked another 2 3/4 miles. The group then stopped for lunch. In the afternoon, the group then hiked 4 3/4 miles, took another break, and then hiked 2 1/2 miles. Which of the following statements are true?
What are the following statements?
The hikers in total travelled for [tex]13\frac{3}{4}[/tex].
What is addition?
Addition in maths, a process of combining two or more numbers.
Given that, in the morning, a group of hikers hiked 3 3/4 miles, took a break, and then hiked another 2 3/4 miles. The group then stopped for lunch. In the afternoon, the group then hiked 4 3/4 miles, took another break, and then hiked 2 1/2 miles
[tex]3\frac{3}{4} +2\frac{3}{4} +4\frac{3}{4} + 2\frac{1}{2}[/tex]
15/4+11/4+19/4+5/2 = 55/4
= [tex]13\frac{3}{4}[/tex].
Hence, The hikers in total travelled for [tex]13\frac{3}{4}[/tex].
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The area of a rug is : 42 1/4 square feet. The rug is 6 1/2feet wide. What is the length of the rug?
Answer:
Square footage is calculated by multiplying width by length. So if a room is 9 foot wide by 12 foot long, 9 x 12 = 108 square feet.
Step-by-step explanation:
This should help!
The teacher recommends that students read for 20 minutes each
night. How many pages will the student complete?
Find the value of (3x) in the figure
To find the missing angle, we need to find x.
[tex]3x + 2x - 10 = 180\\\\5x - 10 = 180\\\\5x = 190\\\\x = 38[/tex]
Now, we plug in what we got for x into 3x.
[tex]3(38)\\\\114[/tex]
The value of 3x is 114.
Please help it’s due tonight and my online teacher don’t help me or teach me please!!! ♥️
Answer:
x=4
Step-by-step explanation:
A+B=C
A^2+X=C^2
12^2+X=24^2
144+X=576
/144 /144
x=4
A mole was burrowing in a field. First, the mole went 6 meters in one direction,
then 8 meters in another direction, and then 4 meters in another direction. How far
did the mole burrow?
Five friends want to share 1,000
comic books equally. Can you use mental math to find how many
comic books each friend will get?
Answer:
each friend gets 200 books
Step-by-step explanation:
1,000÷5=200
what is special about the y coordinate that goes with the x coordinate of 1 on a proportional graph
Answer and Step-by-step explanation:
There is a two-dimensional numbers line in a coordinate plane, which has a horizontal line x-axis, and the vertical line is known as the y-axis. These lines intersect each other at zero points, and they are perpendicular. Zero points are known as the origin. The axes divide the plane into quadrants.
A point in the coordinate plane is of the form of (x, y). This point is named as ordered pair; the first number is from the x coordinate, and the second number from the y coordinate.
To make a graph, we draw a dot, starting from the origin, at the coordinate that communicates to the ordered pair. The y coordinates describe how many steps to move up or down ( positive or negative), and x coordinates tell us to move right or left ( positive or negative).
The completeness property for points describes:
Exactly one point in the plane given the number of ordered pair
And
Exactly one ordered pair of numbers at a given point in the plane.
A relation is ordered pairs; the x coordinates are known as domain, and the y coordinate is known as the range.
The domain contains the value that corresponds to the independent variable and the range equal to the dependent variable.
if 1=15 and 6=20 what is 3
Answer:
if 1=15 and 6=20 what is 3
=
25The third term of the sequence is 17
The given can be interpreted as thus:
Given the following parameters
First-term = 15
Sixth term = 20
Assuming the sequence is an arithmetic sequence, the nth term of an arithmetic sequence is expressed as;
Tn = a + (n-1)d
a is the first term
d is the common difference
a = 15
T6 = a+ 5d
20 = 15 + 5d
20-15 = 5d
5 = 5d
d = 5/5
d = 1
Get the third term:
T3 = a+ 2d
T3 = 15 + 2(1)
T3 = 17
Hence the third term of the sequence is 17
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Abu donated 10% of his savings to build a mosque and gave 30% of the rest of his savings to his son. What percentage of his savings has he remaining ?
(A) 27%
(B) 37%
(C) 60%.
(D) 63%
PLEASE HELP! MY BIG SISTER DOES NOT WANT TO HELP ME! AND MY MOM AND DAD IS AT WORK! :( I miss them please help me this
Answer:
The answer is the one in middle
Step-by-step explanation:
The answer should be 5/36 , not 25/6
what is the value of 2.57 1.75
Answer:
2.57 - 1.75 = 0.82
Step-by-step explanation:
Let us assume that we need to find the value of 2.57 - 1.75 i.e. we need to subtract 1.75 from 2.57. It can be done as follows :
The first number is 2.57 and other no is 1.75.
In 2.57, 2 is in ones place, 5 is in tenths place and 7 is in hundredths place.
In 1.75, 1 is in ones place, 7 is in tenths place and 5 is in hundredths place.
Subraction :
2.57
- 1.75
= 0.82
Hence, the value of 2.57 - 1.75 is 0.82
can someone help me with these please
Answer:
Step-by-step explanation:
1 hour = 3600 sec
93204 sec = 93204/3600 = 25.89 hours
52026 min to hours
1 hour = 60 min
= 52026/60 = 867.1 min
nnsnnnsjjajsnsndnnd#nsnnsnznnznssns
I WILL GIVE BRAINLIEST PLEASE DO UPSIDE OWN CAKE METHOD AND SIMPIFLY
Answer:
6 over 25
Step-by-step explanation
I dont what the method yur talking about but the answer
the length or a rectangle is 11 centimeters less than 4 times it width its area is 20 square centimeters find the dimension of the rectangle use formula aera = length*width the width is cm
How many different surgery scrub outfits would you have if you have 5
scrub tops and 2 pairs of scrub pants?
Answer:
2
Step-by-step explanation:
cuz u would have extra hats so just wear the pants again
Suppose you have ordered one medium onion ring and one 16oz chocolate shake from Burger King. The onion rings have 19 grams of fat and the shake has 23 grams of fat. If each cheeseburger has 13 grams of fat, how many cheeseburgers can you order and still keep the total fat content of the meal to no more than 81 grams?
Answer:
3 cheese burgers.
Step-by-step explanation:
expand form 16(2x - 1)
Answer:
32x - 16
Step-by-step explanation:
16(2x - 1)
16 • 2x - 16
32x - 16
Answer:
32x - 16
Step-by-step explanation:
distrubutive property: 16 times 2x plus 16 times -1
When Carla looked out at the school parking lot, she noticed that for every 2 vans, there were 5 trucks. If there
were 84 total vehicles in the parking lot, how many of them were trucks?
Answer:
60 trucks
Step-by-step explanation:
2x12=24
5x12=60
60+24=84 total vehicles
60 of them are trucks.
the slope of line is -1/3. what is an equation of a line that is perpendicular to line of t
write the slope intercept form of the equation of each line given the slope and y-intercept
A shipment of 12 microwave ovens contains 2 defective units. A restaurant buys 4 of these units. What is the probability of the restaurant buying at least 3 nondefective units? The probability of the restaurant buying at least 3 nondefective units is
Answer:
91%
Step-by-step explanation:
we can use combinations:
Total probabilities = 12! / (4!8!) = 479,001,600 / 967,680 = 495
Probability of no defective unit = ₁₀C₄ = 10!/4!6! = 3,628,800 / 17,280 = 210
Probability of one defective unit = ₁₀C₃ · ₂C₁ = 10!/3!7! · 2!/1! = 120 · 2 = 240
Probability of no more than one defective unit = (210 + 240) / 495 = 450 / 495 = 91%
need help and proper explanation
I will mark Brainliest and 15points.
Step-by-step explanation:
Q1.
1. 3×1+2=5
=5/3
2. 3×5+3=18
=18/5
3. 8×4+3=35
=35/4
4. 12×3+2=38
=38/3
5. 10×7+2=72
=72/7
Q2.
1. 1/7 = 7/1 = 7
2. 8/3 = 3/8
3. 9 = 1/9
4. 4 1/3 = 4×3+1 = 13 = 13/3 = 3/13
5.14 2/3 = 14×3+2 = 44 = 44/3 = 3/44
Hope this helps you
Answer:
For A)
when you go from mixed number to improper fraction all you have to do is multiply the denominator (bottom number) with the whole number (the big number on the left) then finally add the numerator (on the top). After you get the answer just write the answer divided the denominator (answer/denominator) to write as improper fraction. Examples is shown below.
For B) all you have to do is switch the fraction. If it a whole number then just assume that it is divided by 1, and for mixed fraction just solve it like A then switch the fraction. Examples shown below.
Step-by-step explanation:
For A)
1. 1 (2/3) -> multiply 3 with 1 then add the 2. So, (3 x 1) +2 = 5 then write as improper fraction which is 5/3
2. 3 (3/5) -> (5 x 3) + 3 = 18 -> 18/3
and so on...
For B)
1. 3/7 -> 7/3
3. 9 which is 9/1 -> 1/9
5. 14 (1/3) -> (3 x 14) + 1 = 43 -> 43/3 -> 3/34
In ΔKLM, m = 18 inches, ∠M=124° and ∠K=29°. Find the length of k, to the nearest 10th of an inch
Answer:
10.5
Step-by-step explanation:
sin29
k
=
sin124
18
Plug in. Opposite sides go together.
k=\frac{18\sin 29}{\sin 124} \approx 10.526 \approx 10.5
k=
sin124
18sin29
≈10.526≈10.5
The required length of k is 10.5 inches for the given triangle.
What is the sine rule?The sine rule defines the side length ratios of triangles to their opposing angles. This proportion is true for all three sides and opposing angles.
a/sinA = b/sinB = c/sinC
The triangle is given in the question, as follows:
In ΔKLM, m = 18 inches, ∠M=124° and ∠K=29°.
We have to determine the length of k.
As per the sine rule, the required solution would be as:
m/sin∠M = k/sin∠K
Substitute the known values and we get
18/sin 124° = k/sin 29°
k = (18/sin 124°) × sin 29°
k ≈ 10.5
Thus, the length of k is 10.5 inches.
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please somone help me. i don’t know how to do this.
Answer:
x=11
Step-by-step explanation:
116+35=151
180-151= 29
So then we plug in the equation
3x-4=29
Do the math and we get
x=11
What is the slope of the line?answer
Answer:
Whenever the equation of a line is written in the form y = mx + b, it is called the slope-intercept form of the equation. The m is the slope of the line. And b is the b in the point that is the y-intercept (0, b). For example, for the equation y = 3x – 7, the slope is 3, and the y-intercept is (0, −7).
Step-by-step explanation:
Answer:
The slope of the line is -2.
Step-by-step explanation:
Because the line is going down from left to right it is considered a negative slope. The rise is -2 and the run is 3, so the slope of the line in integer form is -2.
But, if it was in fraction form the slope would be -2/3.
Hope this helps! If you have any additional questions please don't hesitate to ask me or your teacher to be sure you master the subject. :) Stay safe and please mark brainliest!
Factor completely a^2− 7a + 10
Answer:
(a - 2) • (a - 5)
Step-by-step explanation:
a^2 - 2a - 5a +10
a • a(a - 2) - 5a + 10
(a - 2) • (a - 5)