Answer:
H0 : μ = 8.5
H1 : μ > 8.5
1 sample t test ;
Test statistic = 2.53
Pvalue = 0.994
No, we fail to reject the Null ;
There is no significant evidence to support the Claim that the mean running time of light bulb is greater Tha last year.
Step-by-step explanation:
H0 : μ = 8.5
H1 : μ > 8.5
Test statistic :
(xbar - μ) ÷ (s/sqrt(n))
(8.7 - 8.5) ÷ (0.5 / sqrt40)
Test statistic = 2.53
The Pvalue :
P(Z < 2.53) = 0.9943
Pvalue = 0.994
Decison region :
Reject H0 ; if Pvalue < α
0.9943 > 0.05 ; We fail to reject the Null
Evaluate. 2.32 – 1=0 33 16 17 11
Answers:
11
17
33
16
Answer:
1.32 not zero
Step-by-step explanation:
The accompanying unions and labor law data reports the percent of public and private-sector employees in unions in a certain year for each state, along with indicators of whether the states had a bargaining law that covered public employees or right-to-work laws. For all the tests, let population 1 be states with no bargaining laws and population 2 be states with bargaining laws.
Required:
a. Test the hypothesis that the percentage of employees in unions for both the public sector and private sector is the same for states having bargaining laws as for those who do not.
b. Test the hypothesis that the percentage of employees in unions for both the public sector and private sector is the same for states having right‐to‐work laws as for those who do not.
Answer: B
Step-by-step explanation:
It is B Beacuse you cant say its A beacsuse that wrong to the question you asked.
what would the perfect square be???
Answer:
d
Step-by-step explanation:
i literally just did that
Answer:
D
Step-by-step explanation:
Find the area of this figure.
Answer:
189
Step-by-step explanation:
9 *21
Solve the system of equations
Find each measure.
11. m
Answer:
f mZDEC = (12x – 3), mZBCE = (7x – 26), and mzDAE = 72°, find each angle measure. 12X-3+7X-36 =180. 19x-29 = 180. 19x - 309. X = 11 m<DEC = 12cu1-3.Step-by-step explanation:
PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
Answer:
1. Congruent
2. They are vertical angles
3. 12x-18=8x+10
4. x = 7
Step-by-step explanation:
It’s simple math for me but all the answers above should be correct...
If h = 7 units and r = 3 units, then what is the volume of the cone shown above?
Answer:
Step-by-step explanation:
h = 7 units
r = 3 units
Volume of cone = (1/3) *πr²h
[tex]= \frac{1}{3}* \frac{22}{7}*3*3*7\\\\= 22 *3\\\\= 66 cubic units[/tex]
If h = 7 units and r = 3 units, then what is the volume of the cone shown above ?
Answer:-Given:-[tex] \bullet [/tex] Height (h) of the cone is 7 units.
[tex] \bullet [/tex] Radius (r) of the cone is 3 units.
To Find:-The volume of the cone.
Solution:-We know,
Formula of volume of cone is [tex]\frac{1}{3} [/tex]πr²h
So, Volume of the cone = [tex] \frac{1}{3} [/tex] × [tex] \frac{22}{7} [/tex] × (3)² × 7
= [tex] \frac{1}{3} [/tex] × [tex] \frac{22}{7} [/tex] × 9 × 7
= [tex] \frac{22 \: × \: 9 \: × \: 7}{3 \: × \: 7} [/tex]
= [tex] \frac{1386}{21} [/tex]
= 66 cubic units.
The volume of the cone is 66 cubic units. [Answer]PLEASE ANSWER IN ONE MINUTE WILL MARK BRAINLIST
Answer:
x=3
Step-by-step explanation:
Pls help fast if correct I’ll give Brainliest
Answer:
c
Step-by-step explanation:
c
3x - 12 = 6y
solve for y
Answer:
y = x/2 - 2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Yvonne continues to work full-time at her job while she attends college part-time. It takes 5 years for Yvonne to complete
the program, but when she does she is able to increase her salary from $37,000 per year to $45,000 per year. At this
rate, Yvonne will have recovered her college costs after 4.5 years. How much did it cost Yvonne to go to college?
a. $36,000
b. $45,000
c. $40,000
d. $32,000
Answer:
It is A
Step-by-step explanation:
f(x) = x2 What is g(x)?
A g(x)=3x^2
B g(x)= 1/3x^2
C g(x)= 1/9x^2
D g(x)= (1/3x)^2
Answer:
B g(x)= 1/3x^2
Step-by-step explanation:
In this question, we have that:
[tex]f(x) = x^2[/tex]
So, when [tex]x = 3, f(x) = f(3) = 3^2 = 9[/tex]
What is g(x)?
We have that [tex]g(x) = 3[/tex], when [tex]x = 3[/tex]
[tex]\frac{3}{9} = \frac{1}{3}[/tex]
This means that g is a third of f, and the correct answer is given by option B.
It is not d because the paranthesis is elevated, which means that (1/3)^2 = 1/9,
Integers
53 + (-26 )
53 + (-26 )
✨ Answer ✨[tex] \: \: \: \: \: \: \: \: \: \purple{ \boxed{ \boxed{ \huge{ \tt{ \: 37 \: }}}}}[/tex]
Kaitlyn is walking on a treadmill at a constant pace for 36 minutes. She has programmed
the treadmill for a 2-mile walk. The display counts backward to show the distance
remaining.
Enter and graph the equation that gives the distance f(x) left in miles as a function of the
number x of minutes she has been walking. Then, find and compete the interpretation of
the x- and y-intercepts.
The equation is f(x) =
Answer:
x int = (36,0)
y int = (0,2)
Step-by-step explanation:
Speed = distance / time
speed = 2/36 = 0.05555 Or 1/18 (as a fraction)
equation = f(x) = 2 - x/18
graph
The equation that gives the distance f(x) left in miles as a function of the number x of minutes she has been walking is [tex]f(x) = -\frac{x}{18} + 2[/tex]
The x-intercept of the graph is at (0, 2) which shows that the distance traveled at the beginning is 2 miles
The y-intercept of the graph is at (36, 0) which shows that no distance was covered when at when the time is 36 minutes
The general equation that represents the graph is expressed as:
[tex]f(x) = 2 - sx[/tex]
s is the speed of Kaitlyn
The formula for calculating the speed is expressed as;
[tex]speed = \frac{distance}{time}[/tex]
The function required will become;
[tex]f(x) = 2 - \frac{d}{t}x\\[/tex]
Given the following parameters
distance "d" = 2 miles
Time "t" = 36 minutes
Substitute the given parameters into the function as shown:
[tex]f(x) = 2 - \frac{2}{36}x\\f(x) = 2 - \frac{1}{18}x\\f(x) = -\frac{x}{18} + 2[/tex]
Hence the equation that gives the distance f(x) left in miles as a function of the number x of minutes she has been walking is [tex]f(x) = -\frac{x}{18} + 2[/tex]
Get the y-intercept of the function:
If x = 0
[tex]f(x) = -\frac{0}{18} + 2\\f(x) = 2[/tex]
The y-intercept of the function is (0, 2)
Get the x-intercept of the function
[tex]0 = -\frac{x}{18} + 2\\-2 = -\frac{x}{18} \\x = 36[/tex]
Hence the x-intercept of the graph is expressed as (36, 0)
Learn more here; brainly.com/question/19859423
Solve for x: 2x - 11 = 7x + 16
Answer:
x=-5.4
Step-by-step explanation:
Answer:
-5.4
Step-by-step explanation:
2x - 11 = 7x + 16
-11 = 5x +16
-27 = 5x
x = -5.4 (-27/5)
Please guys help me
Answer:
[tex]C' = (2,8)[/tex]
[tex]A' = (4,4)[/tex]
[tex]T' = (10,10)[/tex]
Step-by-step explanation:
Given
[tex]k =2[/tex]
[tex]C =(1,4)[/tex]
[tex]A = (2,2)[/tex]
[tex]T =(5,5)[/tex]
Solving (a): The new points
To do this, we simply multiply the old points by the scale factor.
i.e.
[tex]New = Old * k[/tex]
So:
[tex]C' = (1,4) * 2 = (2,8)[/tex]
[tex]A' = (2,2) * 2 = (4,4)[/tex]
[tex]T' = (5,5) * 2 = (10,10)[/tex]
Solving (b): The graph of the original image
See attachment
A town determined that the function f(x) - 820(0.977* models the number of speeding tickets issued in the town x years after 2000. Which statement is
true about the number of speeding tickets issued each year?
Answer:D The number of tickets is increasing by 97% each year
Step-by-step explanation:
The rate of change is (0.97). You change that decimal into a percent To get your percentage rate / increase rate...I think
work out
cube root 1331 : reciprocal of 0.2
give your answer in the form n:1
Answer:
2.2 : 1
Step-by-step explanation:
cube root 1331 : reciprocal of 0.2
give your answer in the form n:1
The cube root of 1331
(1331)^1/3 = 11
Reciprocal of 0.2 = 1 /0.2 = 5
Hence, the ratio Can be expressed as :
11 : 5
In the form n : 1
divide both sides by 5
11/5 : 5 /5
2.2 : 1
WILL GIVE BRAINIEST KING OR QUEEN
a. What was the warmest high temperature?
b. Write an inequality to describe the high temperatures,L, over the 8-Day period.
a. What was the coldest low temperature?
b. Write an inequality to describe the low temperatures, L, over the 8-day period.
a. On which day(s) did the LARGEST difference between the high and low temperatures occur? write down this difference.
b. On which day(s) did the SMALLEST difference between the high and low temperatures occur? write down this difference.
Answer:
A. The official highest recorded temperature is now 56.7°C (134°F), which was measured on 10 July 1913 at Greenland Ranch, Death Valley, California, USA
B. 2e=2.4
A. The lowest natural temperature ever directly recorded at ground level on Earth is −89.2 °C (−128.6 °F; 184.0 K) at the Soviet Vostok Station in Antarctica on 21 July 1983 by ground measurements.
B. 6.NS.C.8
A. The greatest temperature change in 24 hours occurred in Loma on January 15, 1972. The temperature rose exactly 103 degrees, from -54 degrees Fahrenheit to 49 degrees. This is the world record for a 24—hour temperature change.
B. The red line shows the highest high temperature and the blue line shows the lowest high temperature recorded for each date. The lowest high temperatures represent the hottest part of the coolest day that occurred on each date
Step-by-step explanation:
Hope this helps! Brainlest??
#a
Highest coordinate (1,28)Warmest temperature 28°C.
#b
T be temperature
inequality is
T<=28#c
Lowest coordinate (7,-2)Coldest Temperature -2°C
#d
The area of a rectangle is 176 square inches. The length of the
rectangle is 22 inches. Which equation
can be used to find the width of the rectangle?
Answer:
4tp
Step-by-step explanation:
need help please !! thank you :)
Answer:A
Step-by-step explanation:
11 A right triangle is shown.
х
15 in
17 in
What is the value of X?
A 32 in
B 8 in
C 2 in
D 514 in
Answer:
8 in.
Step-by-step explanation:
A fair die is rolled four times. Calculate the probability of obtaining exactly two 4s.
Answer:
The probability of getting two 4s is 5.55%.
Step-by-step explanation:
Since fair says is rolled four times, to calculate the probability of obtaining exactly two 4s the following calculations must be performed:
100/6 = 16.6666
0.166666 x 0.166666 = X
0.02777 = X
1 = 100
0.02777 = X
0.02777 x 100 = X
2.77 = X
2.77 x 2 = 5.55
Therefore, the probability of getting two 4s is 5.55%.
Use long division to find the quotient below.
(X^2 + 17x+72) / (x+8)
A. X-9
B. X+9
C. X+7
D. X-7
[tex]\huge{\mathbb{\tt { QUESTION↓}}}[/tex]
Use long division to find the quotient below.
(X^2 + 17x+72) / (x+8)
A. X-9
B. X+9
C. X+7
D. X-7
[tex]\huge{\mathbb{\tt {ANSWER↓}}}[/tex]
[tex]\color{green}{B. x+9}[/tex]
[tex]\huge{\mathbb{\tt { SOLUTION↓}}}[/tex]
[tex]\color{black}{\tt{Factor \: x² + 17x 72 : ( x+8)(x+9)}}[/tex]
[tex]\color{black}{\tt(x + 8)( x + 9)}[/tex]
[tex]\color{black}{\tt{x + 8}}[/tex]
[tex]\color{black}{\tt{cancel \: the \: common \: factor: \: x + 8}}[/tex]
[tex]\color{red}{\tt{ = 8 + 9}}[/tex]
#CarryOnLearning
#LetsEnjoyTheSummer
→XxKim02xX
Select the correct classification for the triangle shown below
The correct classification for the triangle shown in figure is,
⇒ Isosceles triangle.
What is mean by Triangle?Any triangle which is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
We have to given that;
The diagram of triangle is shown in image.
Here, Two sides of the given triangle are equal to each other.
Hence, By definition of Isosceles triangle;
The correct classification for the triangle shown is,
⇒ Isosceles triangle.
Thus, The correct classification for the triangle shown in figure is,
⇒ Isosceles triangle.
Learn more about the triangle visit;
brainly.com/question/1058720
#SPJ2
A copy machine makes 24 copies per minute. How long does it take to make 84 coples?
Answer: 3 1/2 minutes
Step-by-step explanation:
A copy machine makes 24 copies per minute.
How long does it take to make 84 copies?
It takes 3 1/2 minutes to make 84 copies.
Find the simplified product: 2 square root 5x^3
Answer:
x Square root 5x
Step-by-step explanation:
GIVING OUT BRAINLIEST TO WHOEVER CAN PROVIDE THE CORRECT ANSWER !! Asap
Answer:
look cuh yo no sabo cuhhhhhh
Step-by-step explanation:
no sabo weys
Evelyn owns a small business selling used books. She knows that in the last week 86 customers paid cash, 30 customers used a debit card, and 28 customers used a credit card. If next week, she is expecting 1200 customers, about how many would you expect to pay with a credit card? Round your answer to the nearest whole number.