The option that represents a valid conclusion based on the given results is;
One can reject the null hypothesis.
We are told that the z-statistic was 2.1.
We are also told that the critical z-values were -1.96 and 1.96.
We see that the z-value is greater than the critical z-values.
Now, in hypothesis testing, when the z-value is greater than the critical z-values, then we reject the null hypothesis.
In conclusion, we will reject the null hypothesis.
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What is the greatest common factor of 49, 62 and 80?
Answer:
literally 1
Step-by-step explanation:
scooby ate my scooby snax
Answer:
Your answer is...
1.Step-by-step explanation:
To find the greatest common factor, you have to list the prime factors of each number. That is how you find any GCF.
A queen-sized mattress is 20 inches longer than it is wide. A king-sized mattress is
16 inches wider that the queen-sized mattress but has the same length. The area
of the king sided mattress is 1,280 square inches more than that of the
queen-sized mattress. Determine the dimensions (length and width) of both the
king-sized and queen sized mattresses.
Answer:
queen's width = 60 in
queen's length = 80 in
king's width = 76 in
king's length = 80 in
Step-by-step explanation:
-queen's wide = ???
-same length = queen's wide + 20
king size:
-king's wide = queen's wide + 16
-same length = queen's wide + 20
queen's area = x
king's area = x + 1280
area = width * length
let's call queen's width and king's width "qw" and "kw" respectively
let's call queen's length and king's length "ql" and "kl" respectively
Q area:
qw * (qw + 20)
qw² + 20qw = x
K area:
(qw + 16) * (qw + 20) = x + 1280
qw² + 36qw + 320 = qw² + 20qw + 1280
qw² - qw² + 36qw - 20qw = 1280 - 320
16qw = 960
qw = 960 / 16
qw = 60
ql = 60 + 20
ql = 80
kw = 60 + 16
kw = 76
kl = ql
kl = 80
what is 8 times 38 plz let me know
Answer:
304
Step-by-step explanation:
use a calculator for that.
7/8 of the animals in a garden are goats the rest 230 cow how many animals are there altogether
Answer:
1610
Step-by-step explanation:
230 is 1/8 percent, multiply it by 7, get 1610
15 points!
A rock is dropped into a pond. What is the spread of the circular ripple after 25 seconds if the ripple travels outward at a speed of 20cm/sec?
Answer:
Since we are assuming a constant velocity, we know that v = d/t which means we can rearrange this formula to solve for distance:
d = v * t
d = (20 cm/sec) * (25 sec) = 500 cm
Step-by-step explanation:
BRAINLIEST?What statement describes the decimal equivalent of 3/ 8 ?
Answer:
0.375
Step-by-step explanation: All you need to do is divide 3 and 8
The picture shows the $481 four friends worked together to earn.
They want to split this money equally.
Drag the money below to the box to show how much each friend will get.
Answer:
for what you have you need to add one more $10 bill.
or make it total $120.25
good luck!!
The total amount each friend will get after split money equally is $120.25.
Given that;
The picture shows the $481 four friends worked together to earn.
And, They want to split this money equally.
Here, the total amount earn = $481
And, the number of friends = 4
Hence, the amount each friend will get,
$481/4 = $120.25
Therefore, the value of the amount is $120.25.
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Help? Find the exact value.
Shonda met with her son's English class teacher at a parent conference. The teacher told Shonda that her son got 78, 89, 63 and 82 on his first four tests. There is one test left and he needs to increase his average to 80% to get a B in the class. What does he need to get on the last test to have an 80% average?
Answer:
In order for him to get a B, he would need to get a 88 on his next test.
please answer the question fast i need it
Answer:
[tex]\frac{6}{5}[/tex]
Step-by-step explanation:
The similarity ratio is the ratio of corresponding sides, image to original
ratio = [tex]\frac{LK}{FG}[/tex] = [tex]\frac{24}{20}[/tex] = [tex]\frac{6}{5}[/tex] ( = 1.2 )
need help with both questions please
Answer:
vertical angle are congruent
because BD and CE intersect and intersecting lines make vertical angle
Step-by-step explanation:
What’s the next 3 terms of the sequence -2,8,-32?
Answer:
Step-by-step explanation:
This is a geometric series.
First term = - 2
Ratio = second term ÷ first term = 8 ÷ (-2) = -4
Next three terms are:
-32 *(-4) = 128
128*(-4) = - 512
-512*(-4) = 2048
Answer:
The next 3 terms would be 128, -512, 2048
Step-by-step explanation:
Since we are dealing with a Geometric Sequence we use this formula [tex]a_{n}=a_{1} *r^{n-1}[/tex]
Since the first term([tex]a_{1}[/tex]) is -2 and for us to find R we have to divide 8 by -2 = -4
So we would rewrite the equations to find the next three terms as
[tex]a_{4}=-2*-4^{4-1}=-2*-4^3=128[/tex]
[tex]a_{5}=-2*-4^{5-1}=-2*-4^4=-512[/tex]
[tex]a_{6}=-2*-4^{6-1}=-2*-4^5=2048[/tex]
Arlington ISD needs to construct a handicap ramp for one of its new buildings under construction. One point on the construction blueprint for the ramp can be identified by the ordered pair (d, 4d), and another point on the ramp is identified by the ordered pair (3d, 5d). If d is not equal to zero, what will the slope of the handicap ramp be after construction is completed?
The slope of the handicap ramp is 1/2
The slope of the handicap ramp is gotten from the equation for the slope of a line, m with endpoints (x₁, y₁) and (x₂, y₂).
m = (y₂ - y₁)/(x₂ - x₁)
Since one point of the ramp can be identified by the ordered pair (d, 4d) and another point on the ramp is identified by the ordered pair (3d, 5d), we have that (x₁, y₁) = (d, 4d) and (x₂, y₂) = (3d, 5d).
Substituting the values of the variables into the equation, we have
m = (y₂ - y₁)/(x₂ - x₁)
m = (5d - 4d)/(3d - d)
m = d/2d
m = 1/2
So, the slope of the handicap ramp is 1/2
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Which of the points shown below are on the line given by the equation y = 5x?
Check all that apply.
B
D
A
O A. Point A: (5, -1)
DB. Point B: (1,5)
C. Point C:(0,0)
D. Point D: (-3,2)
PLEASE ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!11
Answer:
3/2
Step-by-step explanation:
Finding the slope of a line on a graph is easier if you can identify places where the line crosses grid intersections. We see two of those to be ...
(4, 1) and (6, 4)
The second of these points is 4-1 = 3 grid squares higher than the first point. It is also 6 -4 = 2 grid squares to the right. The slope is the ratio of these values:
slope = "rise"/"run" = 3/2
The slope of the graphed line is 3/2.
Anybody know the answer?????
Line segment XZ is congruent to line segment XZ because of the:
Answer:
They are both the same line
Step-by-step explanation:
you buy a pair of rollerblades on sale for $64.99. This is $4.98 less than the original price. If g represents the original price, what equation cannot be used to find the original price
g = 64.99 - 4.98
Step-by-step explanation:
If g is the original price then if you subtract the difference between the original price and the current price.
Estimate 4732 divided by 13
Answer:
364
Step-by-step explanation:
13÷4732= 364
I hope it help^^
⚠️ inequality’s ⚠️
m-2/3 <-4 OR 3m-8>4
Answer:
-10 OR 4
Step-by-step explanation:
Josephine was charged $7.20 for a long distance call that lasted 1.5 hours. What was the cost per hour for her long distance call?
Based on the information given, the cost per hour for her long-distance call will be $4.80.
Amount that was charged for the call = $7.20
Number of hours used = 1.5 hours
The cost per hour for her long-distance call will be:
= Amount that was charged for the call / Number of hours used
= 7.20 / 1.5
= $4.80
In conclusion, the cost is $4.80.
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What is 5/4×12.50? Please I really need help.
Answer:
15.62500
Step-by-step explanation:
Answer:
62.5 62 1/2
Step-by-step explanation:
You need to convert the decimal into a fraction
which is 25/2 then make the bottom into the same
5/4 is good because it is 4 so change the 25/2 into a 4.
So you have to do 25x 2 and 2x2 equal to 50/4
then do it like normal
50/4 x 5/4= 250/4 62.5
(50 x 5 and 4x4
Hope that helps!
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a point on the circumference of the circle with the equation (x+10)^(2)+(y+1)^(2)=25 is?
The point on the circumference of the circle with the equation (x+10)^(2)+(y+1)^(2) = 25 is (-6 , 2).
What is the equation of the circle with radius r units, centered at (x,y) ?If a circle O has radius of r units length and that it has got its center positioned at (h, k) point of the coordinate plane,
then, its equation is given as:
(x-h)^2 + (y-k)^2 = r^2
The given equation is
(x+10)^(2)+(y+1)^(2)=25
Where,
h = - 10
k = -1
r = 5
If x = -6 and y = 2
then the given equation of circle is stidfy the given points.
Hence, the point on the circumference of the circle with the equation (x+10)^(2)+(y+1)^(2) = 25 is (-6 , 2).
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Do these pairs of values (x 3,4,6,9,and y 5,7,10,15) represent two quantities that are propertional? A. No, becuase not all of the pairs represent the same ratio. B.....
Answer: No.
Step-by-step explanation:
The (4,7) point has a ratio of 0.5714, different than all the others at 0.6.
3 5 0.6
4 7 0.571428571
6 10 0.6
9 15 0.6
How many 7-letter passwords can you make from the letters A, B, C, D, E, F and G, if letters CANNOT be repeated?
€1 = £0.85. Change €345 into £.
£293.25
Step-by-step explanation:If 1 euro is worth 0.85 pounds, the total of 345 euros is 0.85 times the value of a single euro. This is therefore 0.85 * 345, or £293.25.
Gabby's Christmas budget is $1800. She gives
16
1
6
of her budget to charity. Of her remaining budget she spends
15
1
5
on decorations. How much money does she have left in her budget for Christmas presents?
Answer: 1756
Step-by-step explanation:
16+1+6=23
15+5+1=21
1800-23=1777
1777-21=1756
Laura is saving to buy a 10-speed bike that costs $189. For four weeks she saved part of her check in the amounts of $15, $39, $18 and $27. How much more does she need?
Answer:
90$
Step-by-step explanation:
Answer:
$90
Step-by-step explanation:
$15 + $39 + $18 + $27 = $99
$189 - $99 = $90
Hope this helps <3
Write the number 0.000 000 7 in standard form.
46.8g of sugar is needed to make 6 cakes. How much sugar is needed for 11 cakes?
Answer:
85.8g of sugar
Step-by-step explanation:
It will be 85.8g.
Your welcome.