Answer:
Step-by-step explanation:
Null hypothesis: [tex]\mathbf{H_o: \mu_1 \ge \mu_2}[/tex]
Alternative hypothesis: [tex]\mathbf{H_o: \mu_1< \mu_2}[/tex]
This type of test statistic is a z test statistics
1st 2nd
Sample mean x = 112.2 117,8
Standard deviation σ = 14.0 14.5
Sample size n = 95 70
Point estimate [tex]\bar x_1 - \bar x_2[/tex] = -5.60
Standard error [tex]\sigma_{x_1-x_2}= \sqrt{\dfrac{\sigma_1^2}{n_1} +\dfrac{\sigma_2^2}{n_2} }[/tex]
[tex]= \sqrt{\dfrac{14.0^2}{95} +\dfrac{14.5^2}{70} }[/tex] = 2.2509
Test statistics [tex]z=\dfrac{x_1 - x_2}{\sigma_{x_1-x_2}}[/tex] [tex]=\dfrac{112.2- 117.8}{2.2509}[/tex] = - 2.4878
P-value = 0.012
No, there is no enough evidence Since p-value is greater than 0.01.
Plz help me!
Plz we’ll mark brainliest if correct!
Answer:
Seems like 7 of them failed
Step-by-step explanation:
The chart pretty much tells you
Answer:
7 students
Step-by-step explanation:
Workout the following divisions.
Answer:
Here. Tell me if you don't understand my writing.
If 2 cups makes 6 servings, how much makes 2 servings?
Answer:
two- thirds of a cup will Give 2 servings
Find the area
of the triangle whose box is 45cm
and height is 12cm
Answer:
60 cm is the answer
Step-by-step explanation:
12. In a parking lot, there is an equal number of white red, blue, green and
yellow cars. How many cars could possibly be in the parking lot?
O 53
O 54
O 55
O 56
Answer:
56
Step-by-step explanation:
the number of colour variations of cars is 4.
therefore the possible number of cars should be divisible by 4.
of the given answers only 56 is divisible by 4.
where does the 2 go if the 3 goes with the 6 and the 8
Answer:
My geomatry teacher doesn't even know
Step-by-step explanation:
Line segment ON is perpendicular to line segment ML, and PN = 10.
Circle O is shown. Line segments M O, N O, and L O are radii. Lines are drawn to connects points M and N and points N and L to form chords. A line is drawn from point M to point L and intersects line O N at point P. The length of O M is 25 and the length of P N is 10. Angle O P L is a right angle.
What is the area of triangle MOL?
200 square units
250 square units
300 square units
500 square units
i think its c 300
Answer:
C. 300 square units
Step-by-step explanation:
Answer:
it´s c edg 2021
Step-by-step explanation:
Need help please in number 5
Answer:
HL (Hypotenuse-Leg)
x = 13
Step-by-step explanation:
hypotenuse GJ is shared by both triangles.
∠H and ∠K are right angles so they are right triangles.
leg HG = leg KG
so HL theorem
x + 5 = 8
x = 13
(Right angle, hypotenuse and side theorem)
By this theorem GK = GH ,
=> x + 5 = 8
=> x = 8-5
=> x = 3HOPE IT HELPS
PLEASE MARK ME BRAINLIEST ☺️
Solve and graph the inequality 16x < -64
Answer:
x < -4
Step-by-step explanation:
-64/16 = -4
help guyss willmark as brainiest
Answer:y+2=7/3(x-2)
Step-by-step explanation:
You plug the x, y and the slope on the point-slope formula, which is y-y1=m(x-x1)
Y1 is -2, x1 is 2 and slope(m) is 7/3
Answer: y+2=7/3(x-2)
Step-by-step explanation: I used a coordinate plane
Plz mark me brainliest
Calculate the area of a dart which hits the dartboard with a force of 10 N and pressure of 2000 N/cm^2
Answer:
pressure=force/area
2000. ×area =10
area. =10/2000
area =0.005cm²
write the equation below in words
z=(8-3)+10
Answer:
Z equals open parentheses eight minus three close parentheses plus ten
Step-by-step explanation:
Determine which equation has the same solutions as the given equation.
x2 − 10x − 11 = 0
A.
(x − 10)2 = 36
B.
(x − 5)2 = 36
C.
(x − 5)2 = 21
D.
(x − 10)2 = 21
I just want to mention that the question is wrongly written!
it's meant to be x² − 10x − 11 = 0 and not x2 − 10x − 11 = 0
and so the other equations!
Answer:
The answer is B: (x − 5)² = 36
Step-by-step explanation:
by solving the equations using the quadratic formula we found:
the solutions for x² − 10x − 11 = 0 | x = 11, -1
the solutions for A | x = 16, 4
the solutions for B | x = 11, -1
the solutions for C | x = [tex]\sqrt{21} +5[/tex], [tex]-\sqrt{21}+5[/tex]
the solutions for D | x = [tex]\sqrt{21}+10, -\sqrt{21}+10[/tex]
the given equation: x² − 10x − 11 = 0 and the equation B: (x − 5)² = 36 have the same solutions
Therfore B is the correct answer
jessica has 900 feet of fencing and a very large
Answer:
wot
Step-by-step explanation:
this is not a full question I don't know what to tell ya bud
giving brainliest !! *easy*
Answer:
To convert an angle measure to radians, multiply it by pi/180.
Step-by-step explanation:
310 * pi/180 = 31pi/18 = 5.41 rad
3. If one side of the equation 23+43 = 66 is multiplied by 3, what needs to be done to the other side of the equation to keep the sides equal?
Answer: multiply the other side by 3 also
Step-by-step explanation:
What happens to one side must also happen to the other side. This is the only way to keep equations equal when changing constants and variables
WILL GIVE BRAINLST
HAVE AN AMAZING DAY :)
Answer:
9, 12x=4x+8+20
12x-4x=28
8x=28
X=3.5
Answered both because I wasn't sure which one you needed help with.
Help with this lesson. thank you for those who take the time to help me out.
Answer:
58 mi^2.
Step-by-step explanation:
We can split this up into 2 rectangles and 1 triangle.
Height of the triangle = 4 + 2 + (12-11)
= 7.
Total area
= 2*12 + 2*10 + 1/2 * 4 * height of the triangle
= 24 + 20 + 1/2 * 4 * 7
= 44 + 14
= 58 mi^2.
Which is the graph of the sequence defined by the function f(x + 1) = Three-fifthsf(x) when the first term in the sequence is 375?
On a coordinate plane, 4 points are plotted. The points are (1, 375), (2, 225), (3, 135), (4, 81).
On a coordinate plane, 4 points are plotted. The points are (0, 375), (1, 225), (2, 135), (3, 81).
On a coordinate plane, 4 points are plotted. The points are (1, 375), (2, 75), (3, 15), (4, 3).
On a coordinate plane, 4 points are plotted. The points are (0, 375), (1, 75), (2, 15), (3, 3).
Answer: On a coordinate plane, 4 points are plotted. The points are (1, 375), (2, 225), (3, 135), (4, 81).
Step-by-step explanation:
We have the relation:
f(x + 1) = (3/5)*f(x)
such that the first term is 375
Then:
f(1) = 375.
Using the above relation, we have that:
f(1 + 1) = f(2) = (3/5)*f(1) = (3/5)*375 = 225
Then we have the pair (2, 225)
The next term is:
f(2 + 1) = f(3) = (3/5)*f(2) = (3/5)*225 = 135
Then we have the pair (3, 135)
the next term is:
f(3 + 1) = f(4) = (3/5)*f(3) = (3/5)*135 = 81
Then we have the pair (3, 81)
Then the correct option is the first one; On a coordinate plane, 4 points are plotted. The points are (1, 375), (2, 225), (3, 135), (4, 81).
Answer:
First graph
Did it on egd :)
Show that n(n – 1)(n + 1) + 6n ≡ n3 + 5n
The 8 students in the Environmental Club represent 25% of the students in the
seventh grade. How many students are in the seventh grade?
Answer:
32
Step-by-step explanation:
There are 32 students in the seventh grade' because if you multiply 25% by 4, you will get a 100%, which is what you are looking for. But you also have to multiply the 8 by 4, which will equal to 32,
A female rabbit can give birth to over 40 baby rabbits a year. Suppose all of her offspring survived and reproduced, all of their offspring survived and reproduced, and so on. If that happened, in only eight years the mass of rabbits would exceed the mass of Earth!
So, why aren’t we overrun with rabbits? What keeps the rabbit population in check?
(It says Mathematics because I couldn't find the right subject!)
Answer:
rabbit predators >:)
Step-by-step explanation:
The histogram shows the number of minutes that users waited to register for classes on a university's online system. According to the histogram, how many users waited more than a hour but not more than 2 hours?
A) 2
B) 8
C) 9
D) 11
Answer: the answer is 4
Step-by-step explanation:
11 users waited more than a hour but not more than 2 hours.
What is Histogram?A histogram is a graphical depiction of continuous or discrete data. In a histogram, the frequency is represented by the area of a bar. Frequency density, which is proportional to frequency, is plotted on the y-axis, and intervals representing the range of values are plotted on the x-axis.
From the Histogram we have
For 0 -30 minutes - 5 users wait
31- 60 minutes- 4 users wait
61- 90 minutes- 9 users wait
91- 120 minutes- 2 users wait
120- 150 - 4 users wait
So, the number of users waited more than a hour but not more than 2 hours
= 9 + 2
= 11 users
Learn more about Histogram here:
https://brainly.com/question/30354484
#SPJ5
Find the slope of the line
Answer:
the answer is 0
Step-by-step explanation:
How many hundreths are equivalent to three-quaters
Answer:
7.5 hundredths (7 hundredths and 5 tenths) equals 3/4
Step-by-step explanation:
Answer:750 hundreths
Step-by-step explanation: I not sure
12
13
Rob paid $50.15 for two pairs of jeans, which include a 15% discount.
What was the price of one pair of jeans before the discount was added?
Answer:
$29.50
Step-by-step explanation:
The price that Rob paid includes a 15% discount. This means that Rob paid 85% of the original price.
100% - 15% = 85%
Divide the price Rob paid by the percentage the price is of the total.
85% = 0.85
50.15/0.85 = 59
Now, divide the total price by 2 so that you can find the price of one pair of jeans.
59/2 = 29.50
The price of one pair of jeans is $29.50
Suppose that the effects of copper on a second species (say, species B) of fish show the variance of ln(LC50) measurements to be .8. If the population means of ln(LC50) for the two species are equal, find the probability that, with random samples of ten measurements from each species, the sample mean for species A exceeds the sample mean for species B by at least 1 unit.
Answer:
Hello the reference related to your question is missing attached below is the reference
answer : p ( x - y ≥ 1 ) = 0.0019
Step-by-step explanation:
Assuming 'X' and 'Y' are independent random samples
X : mean value = [tex]U_{1}[/tex] , variance = 0.4 /10 = 0.04
Y : mean value = [tex]U_{2}[/tex] , variance = 0.8/10 = 0.08
since the values are independent
V [ X - Y ] = V [ X ] + V [Y ] = 0.04 + 0.08 = 0.12
Determine the probability that the sample mean for species A exceeds the sample mean for species B by at least 1 unit
P ( x - y ≥ 1 ) = 0.0019
attached below is the detailed solution
What is the distance between (3, -2), (2, -4)?
Identify the polynomial.
x3y3
trinomial
monomial
binomial
if you subtract 17 from my number and multiply the difference by -6 the results is -138 what is Sarah's number
Answer:
40
Step-by-step explanation:
let the unknown be y (x is used as times(multiplication) )
(y-17)x-6=-138
add /-6 to both sides
y-17x-6/-6=-138/-6
y-17=23
make y independent/add 17 to both sides
y-17+17=23+17
y=40
or in an easier way
-138/-6 =23
23+17=40
simply reversing the question to get the answer