Since [tex]|z| = 1.301 \leq z_1 = 1.64[/tex] null hypothesis on this data is not rejected.
Null and Alternative HypothesisData;
sample mean x1 = 240993population standard deviation σ1 = 25875sample size n1 = 35sample mean x2 = 249237population standard mean σ2 = 27110sample size n2 = 35significance level α = 0.10H_o = μ1 = μ2
H_o = μ1 ≠ μ2
This is a two-tailed test and population standard deviation will be used.
Test StatisticThe z-stat is
[tex]z = \frac{x_1 - x_2}{\sqrt{\frac{\sigma_1^2}{n_1}+ \frac{\sigma_1 ^2}{n_2} } } \\z=\frac{240993-249237}{\sqrt{\frac{25875^2}{35}+ \frac{27110^2}{35} } } \\z = \frac{-8244}{6334.6388} \\z = -1.301[/tex]
The significance level is α = 0.1 and the critical value for a two-tailed test is
[tex]Z_t = Z_1 - _\alpha _/_2 = 1.64[/tex]
Since [tex]|z| = 1.301 \leq z_1 = 1.64[/tex], we can assume that the null hypothesis is not rejected.
Learn more on null hypothesis here;
https://brainly.com/question/15980493
simplified form of 2460−78+6884
Answer:
4502
Step-by-step explanation:
6884+78=6962
6962-2460=4502
Suppose the correlation coefficient between a student's homework score & their test score is found to be
0.92.
0.92.
What conclusion can you make about the relationship between a student's homework & test scores based on the correlation coefficient?
A
Students score an average of 92%92% on their homework & tests
B
A student's homework & test score have a strong association
C
There is a difference of 0.920.92 points from a student's homework & test grades
D
Only 92%92% of students pass on their homework & test scores
Answer:
A
Step-by-step explanation:
Find the area of this figure! (Don’t give me a big explanation, i have 30 mins to get this ixl to 90, currently at 74)
315 m²
area of rec + area of rec + area of rec + area of triangle
⇒ length + width + length + width + length + width + 1/2 * base * height
⇒ 19 * 6 + 9 * 9 + 18 * 5 + 1/2 * 12 * 5
⇒ 90 + 30 + 81 + 114
⇒ 315 m²
Answer:
315 m²
Step-by-step explanation:
As this figure may seem complicated, we can split it into four separate figures.
Area
Area of vertical rectangle + Area of left horizontal rectangle + Area of right horizontal rectangle + Area of triangle6 x 10 + (9 + 6) x (19 - 10) + 18 x 5 + 1/2 x 12 x (18 + 9 + 6 - 17 - 11)60 + 15 x 9 + 90 + 6 x 560 + 135 + 90 + 30180 + 135315 m²5. Jane invests $5,000 in a stock that loses 2% per year on average. Eqn:
Answer:
The equation would be 5000(1.02)^x with x representing the amount of years, as the values keep multiplying.
Step-by-step explanation:
please mark brainliest if you can thx <3
Answer:
5000(0.98)^x, with x being the amount of years
16. Twelve inches is what percent of a yard?
Answer:
There are 3 feet in one yard, so each foot is 1/3 of a yard/
To find the percentage of each foot, divide 1 by 3
One foot is 33 1/3 percent of a yard.
Twelve inches is 33.33 percent of a yard.
What is Percentage?Percentage is defined as a number that can be expressed as a fraction of 100.
The statement is
Twelve inches is what percent of a yard
12 inches in terms of % yard
1 inch = 0.0277778 yard
12 inches = 0.333336 yard
In percentage = 33.33 % yard
To know more about Percentage
https://brainly.com/question/13450942
#SPJ2
Question below! :)
Brainliest!
Answer:
Point C, because it is the only place on the picture where the lines cross.
Answer:
point C
Step-by-step explanation:
That is the point where they intersect
Solve 64x2 - 121 = 0 using square roots.
Using the square root property to solve this 64x² - 121 = 0, the value of x is - 11 / 8 and 11 / 8.
How to solve quadratic equation using square root property?64x² - 121 = 0
add 121 to both sides of the equation
64x² - 121 + 121 = 0 + 121
64x² = 121
divide each term by 64 and simplify
64x² / 64 = 121 / 64
x² = 121 / 64
Take the square root of both sides of the equation to eliminate the exponent on the left side
√x² = ±√ 121 / 64
Simplify the right side of the equation.
x = ± 11 / 8
Therefore,
x = 11 / 8, - 11 / 8
learn more on square root property here: https://brainly.com/question/3506989
The smiths were just approved for a 25 year mortgage at an 11% fixed rate. if they had not filed bankruptcy in the past, they could have gotten a rate of 7%. if their loan amount is $128,000, how much more per month will the smiths be paying for their mortgage as a result of their bankruptcy? a. $349.86 b. $125,840.78 c. $904.68 d. $235.09 please select the best answer from the choices provided a b c d
The increase in monthly amortization has result of higher interest rate is $349.86.
We have given ,the smiths were just approved for a 25 year mortgage at an 11% fixed rate. if they had not filed bankruptcy in the past, they could have gotten a rate of 7%.
We have to calculate the mortage value when loan amount is,$128,000,
What is the amortization formula?[tex]A = P \times ((r(1+r)^n)/((1+r)^n-1))[/tex]
A = is the amortization
P = is the principal
r = is the rate
n = is the period
We have to compute for the amortization using the 11% interest rate.
[tex]A = $128000 \times ((0.11(1.11)^{25})/((1.11)^{25}-1))[/tex]
[tex]A = \$1,254.54[/tex]
When we solve manually, the answer should be divided by 12 because it was on a monthly basis.
Next we have to compute for the amortization using the 7% interest rate.
[tex]A = $128000 \times ((0.07(1.07)^25)/((1.07)^25-1))[/tex]
[tex]A = $904.68[/tex]
When solve manually, the answer should be divided by 12 because it was on a monthly basis.
Therefore, the increase in monthly amortization has result of higher interest rate is $349.86.
To learn more about the amortization visit:
https://brainly.com/question/10561878
Hey could you guys help me :)
I need help A.S.A.P
Answer:
ur mom
Step-by-step explanation:
A game at the fair involves ping-pong balls numbered 1 to 18. you can win a prize if you correctly choose the 5 numbers that are randomly drawn. what are your chances of winning?
Answer:
5/18
Step-by-step explanation:
Here,
total numbering balls n(S) = 18
total number of winning balls n(B) = 5
Therefore,
Probability or winning chances P(B)=
n(B)/n(S)
= 5/18
Can someone help with these questions??
Will be helpful
Solve for Y. Will mark branliest please help!
Answer:
y = 2 v2, 2 square root 2
Step-by-step explanation:
since it's a right triangle with a 45°, that means the other angle is also 45°
which makes both sides the same
Pythagoras
4^2 = y^2 + y^2
16 = 2 y^2
16/2 = y^2
8 = y ^2
v8 = y
2 v2 = y
note: (v = square root)
Answer:
[tex]2\sqrt{2[/tex]
Step-by-step explanation:
The ratios of a 45 - 45 - 90 triangle is [tex]1:1:\sqrt{2}[/tex]
To get 4 for the hypotenuse, you need to mulitpy [tex]\sqrt{2}[/tex] by [tex]\sqrt{8}[/tex].
[tex]\sqrt{2}[/tex] x [tex]\sqrt{8}[/tex] = [tex]\sqrt{16}[/tex]
Simplify.
[tex]\sqrt{16} = 4[/tex]
If you simplify the [tex]\sqrt{8}[/tex], it equals [tex]2\sqrt{2}[/tex].
Since the ratio is [tex]1:1:\sqrt{2}[/tex]
The sides will be [tex]2\sqrt{2}:2\sqrt{2}:4[/tex]
I need help with this
Find the measure of the arc or angle indicated.
See picture for full problem. Please and thank you so very much!!!
the answer is 118 degrees
Answer:
Angle D = 118°
Step-by-step explanation:
Check out the attached photo.
what would be the answer for a triangle with a hypotenuse of 7 and a leg of 5
Answer:
With this hypotenuse calculator you will quickly find this longest side of a right triangle. If you want to know what is the hypotenuse
Step-by-step explanation:With this hypotenuse calculator you will quickly find this longest side of a right triangle.
What can you help me with on khan academy 6th grade?
I could help you with math
please help!! no bots!!
Find the area of this figure.
Round your answer to the
nearest hundredth. Use
3.14 to approximate TT.
A = [?] ft²
please help right now 40 POINTS
Answer:
I disagree a basketball player is not dependent on the on one event that Is an event does not affect another
Sonnie deposited $2,500 into an account that earns simple interest. After 5 years, she earned $375 in interest. What was the interest rate of the account?
Answer:
3%
Step-by-step explanation:
The interest on the account is given by the simple interest formula:
I = Prt
where I is the interest, P is the principal invested, r is the annual rate, and t is the number of years
375 = 2500r(5) . . . . . . using the given values in the formula
375/12500 = r = 0.03 . . . . . divide by the coefficient of r
Sonnie's account had a 3% interest rate.
Each railroad car in a train set is 6 inches in length.the railroad track is 5 feet long .how many railroad cars can fit on the track
Answer: 10 cars
Step-by-step explanation:
We know that:
A railroad car is 6 inches long and the railroad track is 5 feet long
Start by converting feet to inches. You can do that by multplying the amount of feet by 12.
5 feet x 12 = 60 inches
Now we can divide the length of the railroad track by the length of the railroad cars to see how many we can fit.
60 ÷ 6 = 10
show how to use the unit circle to find tan60
[tex]\tan 60^{\circ}~\text{equals y coordinate divided by x coordinate, where }(x,y) = \left(\dfrac 12, \dfrac{\sqrt 3}2 \right)[/tex]
[tex]\tan 60^{\circ}\\\\= \dfrac yx \\\\\\=\dfrac{\sin 60^\circ}{\cos 60^\circ}\\\\\\=\dfrac{\tfrac{\sqrt 3}2}{\tfrac 12}\\\\\\=\dfrac{\sqrt 3}2 \times 2\\\\\\=\sqrt 3[/tex]
This rule is enough
Now
y=sinAx=cosAHere A=60°
tan60=sin60/cos60tan60=√3/2÷1/2tan60=√3A solid box with height 60cm, width 10cm and length 10cm needs to be painted.
The paint costs £0.17 per cm2.
How much will it cost to paint the outside of the box?
Answer:
£442
Step-by-step explanation:
see vid on how to calculate cm² of a box here
Answer:
17cm²
Step-by-step explanation:
area of box =l×w
10cm×10cm=100cm²
0.17×100cm²=17cm²
PLS HELP ASAP!!
Choose the correct line of best fit for each of the scatter plots below.
Find the missing angle.
Answer:
85 degrees
Step-by-step explanation:
The angles in a quadrilateral add to 360 degrees, so x+109+96+70=360.
This means that x=360-109-96-70=85 degrees
i need help with this quick pls , please solve 5a
Answer:
Step-by-step explanation:
If you use de morgan's laws to write out [tex]-(PvQ)[/tex], it returns -P ^ -Q
And if ^ means 'and', it is showing that (P and Q) and (-P and -Q) which isn't possible since there can't be something that is both true and false. Therefore, it is a contradiction since something can not be true a nd false at the same time.
Four equations are graphed on the coordinate grid:
A coordinate grid is shown from negative 10 to positive 10 on the x axis and also on the y axis. Line A passes through the ordered pairs negative 8, 5 and 4, negative 7. Line B passes through the ordered pairs negative 3, 8 and 2, negative 7. Line C passes through the ordered pairs 0, 9 and negative 7, negative 5. Line D passes through the ordered pairs 1, 4 and negative 4, negative 1 and is extrapolated further in the quadrant.
Which set of equations has (−2, 5) as its solution?
A and B
B and D
B and C
A and D
Answer:
B and C
Step-by-step explanation:
The point where (-2,5) is located is also a intersection between the line B and C.
Genevieve needs to buy some uniform shirts for her new job. Store A sells uniform shirts for $12 each. Store B sells uniform shirts for $14. 50 each. Genevieve has a coupon for $10 off her purchase at Store A and another coupon for $20 off her purchase at Store B.
Write an
equation that can be used to determine s, the number of uniform shirts Genevieve can buy to
make the total purchase price the same for each store.
Therefore, the resulting expression for the price Genevieve will pay
will be: p - 100 - 3/20p
-lukelaws
18. A variety of species of Galapagos finches evolved from one original species long ago through the process of A. as reproduction B. ecological succession C. natural selection D. selective breading
Pls help will give brainlest
c , Natural selection is the process where species evolved over time through trying to adapt their environment.
How much will be in the jar?
Answer:
option B 1 1/6amount of paint:
1/2 * 1 + 1 * 3 + 1 1/2 * 1 + 1 * 27If divide into 6 jars:
7/61 1/6[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
let's solve ~
Total jars = 6
Total cups of blue paint :
[tex]\qquad \tt \dashrightarrow \: \frac{1}{2} + (1 \times 3) + 1 \frac{1}{2} + 2[/tex]
[tex]\qquad \tt \dashrightarrow \: \frac{1}{2} + 3 + \frac{3}{2} + 2[/tex]
[tex]\qquad \tt \dashrightarrow \: \frac{1 + 6 + 3 + 4}{2} [/tex]
[tex]\qquad \tt \dashrightarrow \: \frac{14}{2} [/tex]
[tex]\qquad \tt \dashrightarrow \:7 \: cups[/tex]
So, teacher distributes all blue paint equally in each jar, then amount of paint in each jar is :
[tex]\qquad \tt \dashrightarrow \: \dfrac{7}{6} [/tex]
[tex]\qquad \tt \dashrightarrow \:1 \frac{1}{6} \: \: cups[/tex]
So, option B is correct
anybody know the answer i need help
Answer:
Each CD was $14.1.
Step-by-step explanation:
43.50 - 1.30 = 42.2
42.2/3 = 14.1
