(a) To determine the null and alternative hypotheses, we have:
H0: μ = $243,780 (The mean price of an existing single-family home is $243,780)
H1: μ < $243,780 (The mean price of an existing single-family home is less than $243,780)
Hypotheses refer to statements or assumptions that are made as a basis for reasoning or for the formulation of mathematical theories, conjectures, or proofs. Hypotheses are often stated before a mathematical investigation or analysis and serve as starting points or assumptions to be tested or proven.
(b) A Type I error is when we reject the null hypothesis when it is true. So, the correct option is: A.
The broker rejects the hypothesis that the mean price is $243,780 when it is the true mean cost.
The null hypothesis (H₀) is a statement or assumption that suggests there is no significant difference, relationship, or effect between variables or populations.
(c) A Type II error is when we fail to reject the null hypothesis when it is false. So, the correct option is: C.
The broker fails to reject the hypothesis that the mean price is $243,780, when the true mean price is less than $243,780.
The null hypothesis typically represents the status quo or the absence of an effect. It is often formulated as an equality statement, stating that two populations are equal or that a parameter has a specific value.
To know more about null hypothesis refer here:
https://brainly.com/question/28920252?#
#SPJ11
A pole that is 2.5 m tall casts a shadow that is 1.34 m long. At the same time, a nearby building casts a shadow that is 46.5 m long. How tall is the building? Round to the nearest meter
Answer:
86.8 m long
Step-by-step explanation:
A pole that is 2.5 m tall casts a shadow that is 1.34 m long. At the same time, a nearby building casts a shadow that is 46.5 m long. How tall is the building? Round to the nearest meter
We solve the above question using the Proportion formula:
Height of the pole/Shadow of the pole = Height of the building /Shadow of the building
Height of the pole = 2.5m
Shadow of the pole = 1.34 m
Height of the building = x
Shadow of the building = 46.5m
Hence:
2.5m/1.34m = x/46.5m
Cross Multiply
1.34m × x = 2.5m × 46.5m
x = 2.5m × 46.5m/1.34m
x = 86.753731343m
Approximately , The height of the building = 86.8 m
Turn y=-1/5x-4 into standard form
6 (8j - 3l + 9 ) 12l + 14j
Answer:
5822j-15972
Step-by-step explanation:
Answer:
5822j-15972
Step-by-step explanation:
Find value of x and y
I need help, I did 1-2b, but i do not mind someone answering it either way so I can double check, but I am mainly stuck with 2c and if someone can tell me the answer and as to why, it would mean a lot and you can get brainlest if it is the right answer :)
Answer:
i belive the answer is c because they always try and trick you making you choose the wrong one and all the evidence cites that it could be c!!
Step-by-step explanation:
24 – 37x - 72
[tex]24 - 37x - {72}^{2} [/tex]
. factorise it
Answer:
The answer is -37x - 48
Dentro de cinco años mi abuelo tendrá el cuádruple de mi edad. Hace cinco años tenia siete veces mi edad¿que edad tenemos el y yo?
Answer:
La edad del abuelo es 75 años y la tuya es de 15 años.
Step-by-step explanation:
Si dentro de 5 años tu abuelo (A) tendrá el cuádruple de tu edad (E), tenemos:
[tex] A + 5 = 4(E + 5) [/tex] (1)
Ahora, si hace cinco años tenia siete veces tu edad:
[tex] A - 5 = 7(E - 5) [/tex] (2)
Multiplicando la ecuacion (1) por -1, tenemos:
[tex] -A - 5 = -4(E + 5) [/tex] (3)
Ahora sumando la ecuación (3) con (2):
[tex] -10 = 3E - 55 [/tex]
[tex] E = 15 [/tex]
Entonces, reemplazando el valor de E en la ecuación (1):
[tex] A + 5 = 4(15 + 5) [/tex]
[tex] A = 75 [/tex]
Por lo tanto, la edad del abuelo es 75 años y la tuya es de 15 años.
Espero que te sea de utilidad!
URGENT URGENT URGENT!!!
HELP PLEASE!!
Answer:
Step-by-step explanation:
I think it’s b correct me if I’m wrong
Answer:
I think it is b im pretty sure
what is the distance between 5,4 and -1,1
Answer:
3[tex]\sqrt{5}[/tex]
Step-by-step explanation:
Calculate the distance d using the distance formula
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
with (x₁, y₁ ) = (5, 4) and (x₂, y₂ ) = (- 1, 1)
d = [tex]\sqrt{(-1-5)^2+(1-4)^2}[/tex]
= [tex]\sqrt{(-6)^2+(-3)^2}[/tex]
= [tex]\sqrt{36+9}[/tex]
= [tex]\sqrt{45}[/tex]
= 3[tex]\sqrt{5}[/tex] ← exact value
≈ 6.71 ( to 2 dec. places )
If it's 12am for me and it's 8am for my friend how many hours apart are we? And if it was 10pm for me what time would it be for him??
Answer:
You are 8 hours apart and it would be 6am for them
Step-by-step explanation:
You guys are 8 hours apart because thats the hour difference, so you add 8 to 10pm getting 6am
Answer:
You are 8 hours apart
Step-by-step explanation:
If it was 10pm for you it would be 6 am for him
determine the value of the?
25x +30=?(5x+6)
Answer:
It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers.
The first step in solving 3+7(x-5)=2x+16 is to
Multiply out the things in the brackets.
3+7(x+5)=2x+16
3+7x+35=2x+16
Bring the x's over to one side and the numbers to the other side.
7x-2x=16-35-3
5x= -22
Find the error.
x=40
y=90
If(x>y and x<50)
print(a+10))
ELIF(x<y or x>50):
print(b*10)
Answer:
If(x>y and x<50): # add semicolon
print(a+10) # one close bracket
add " " double quotes inside print statements
print("a+10")
Kendall is making cupcakes for a party. She uses 18 of a 4-pound bag of sugar to make a batch of cupcakes. Each batch has 24 cupcakes. Drag one expression next to each question. The correct expression for each row is a way to answer that question.
Complete question :
Kendall is making cupcakes for a party. She uses 1/8 of a 4-pound bag of sugar to make a batch of cupcakes. Each batch has 24 cupcakes.
Drag one expression next to each question. The correct expression for each row is a way to answer that question.
How many pounds of sugar does Kendall use for a batch of cupcakes?
How many pounds of sugar are used for each cupcake?
Answer:
1/8 * 4 = 0.5
0.5 ÷ 24 = 0.0020833 pounds
Step-by-step explanation:
The amount of sugar in pounds used for a batch of cupcake is : 1/8 of 4 pounds
1/8 * 4 pounds
= 0.5 pounds
Pounds of sugar used for each cupcake :
Number of cupcakes per batch = 24
Pounds of sugar per cupcake :
Pounds of sugar per batch / number of cupcakes per batch
0.5 pounds / 24
= 0.0020833 pounds
Lanie's room is in the shape of a parallelogram. The floor of her room is shown below and has an area of 108 square feet. Lanie has a rectangular rug that is 6 feet wide and 10 feet long. Will the rug fit on the floor of her room? Use the drop‐down menus to explain and show your answer.
Answer:
Yes it would
Step-by-step explanation:
Lanie's room is in the shape of a parallelogram.
Lanie has a rectangular rug that is 6 feet wide and 10 feet long.
Area of a rectangle = Length × Width
Area of the rectangular rug = 10 feet × 6 feet
= 60 square feet
We are told that:
The floor of her room is shown below and has an area of 108 square feet.
Hence, the rug would fit on the floor of her room because it's area is within the area of the floor of her room.
A young woman walked into a cafe and asked for a drink of water the man behind the counter suddenly pulled out a gun and pointed it at her a few seconds elapsed and then the women smiled and thanked the man and left
She had hiccups so she ordered a glass of water. The man noticed so he pulled out a gun to give her a scare. Being startled is said to make hiccups stop. Therefore, she thanked him for ending her hiccups and left.
Find the length of the third side.if necessary, round to the nearest tenth 24 18
Answer:
30
Step-by-step explanation:
\text{Legs: 18, 24}\hspace{20px}\text{Hypotenuse: ?}
Legs: 18, 24Hypotenuse: ?
a^{2}+b^{2}=
a
2
+b
2
=
\,\,c^{2}
c
2
The Pythagorean Theorem
18^{2}+24^{2}=
18
2
+24
2
=
\,\,c^{2}
c
2
Plug in. c is the hypotenuse.
324+576=
324+576=
\,\,c^{2}
c
2
Square the numbers.
900=
900=
\,\,c^{2}
c
2
Add.
\sqrt{900}=
900
=
\,\,\sqrt{c^{2}}
c
2
Square root both sides.
30=
30=
\,\,c
c
The hypotenuse.
160 divided by 7 rounded to the nearest hundredth
Answer: A We round the number up to the nearest hundred if the last two digits in the number are 50 or above.
Step-by-step explanation:
The equation below shows the total volume (V), in cubic units, of 4 identical boxes with each side equal to s units: V = 453 If s = 2.5 units, what is the value of V?
Answer:
in cubic units, of 4 identical boxes with each side equal to s units: V = 4s3 If s = 2.5 units, what is the value of V? (5 points) 25 cubic units 30 cubic units 62.50 cubic units 156.25 cubic units
Step-by-step explanation:
Find the value of k, represented as a decimal rounded to the nearest tenth.
5/7 = 12/k
Answer:
We conclude that the value of k represented as a decimal rounded to the nearest tenth is: [tex]k = 16.8[/tex]
Step-by-step explanation:
Given the expression
[tex]\frac{5}{7}=\frac{12}{k}[/tex]
We need to determine the value of k, represented as a decimal rounded to the nearest tenth.
Let us solve the expression
[tex]\frac{5}{7}=\frac{12}{k}[/tex]
Apply cross-function multiply: if [tex]\frac{a}{b}=\frac{c}{d}[/tex] then [tex]a\cdot \:d=b\cdot \:c[/tex]
[tex]5k=7\cdot \:12[/tex]
[tex]5k=84[/tex] ∵ 7 · 12= 84
Divide both sides by 5
[tex]\frac{5k}{5}=\frac{84}{5}[/tex]
Simplify
[tex]k=\frac{84}{5}[/tex]
[tex]k = 16.8[/tex] (Rounded to the nearest 0.1 or the Tenths Place)
Therefore, we conclude that the value of k represented as a decimal rounded to the nearest tenth is: [tex]k = 16.8[/tex]
Can someone help me please
Answer:
8(n/4)
Step-by-step explanation:
Hayden's checking account balance was $145.95. After two checks were cashed, each for the
same amount, his balance was - $4.05. This problem can be represented by the equation below.
145.95 - 2x = -4.05
What does x represent?
A. amount of each cashed check
B. total amount of both cashed checks
C. beginning checking account balance
D. final checking account balance
Answer: A. Amount of each cashed check.
Step-by-step explanation:
145.95 - 2x = -4.05
2x=150
X=75
The figure is made up of 2 rectangles and 2 right triangles.
What is the area of the figure?
173 units2
253 units2
277 units2
325 units2
plzzzzzz answer ASAP
Answer:
Hi how are you
Step-by-step explanation:
i thhink the answer is B if im wrong im srry
Answer:
i think it would be the first answer which is, 173 units
definición de variable independiente y variable dependiente
Answer:
hhhhs jjeguuw iiwhrbmeo
Compute the scale factor, as a percent, for each given relationship. Drawing 1 to Drawing 2.
A) 210%
B) 47.61%
C) 2.1
D) 0.47169
Need help and fassttttttt!!!!!plzzz
Answer:
D)0.47160
Step-by-step explanation:
I think correct me of I'm wrong
can anyone tell me correctly
[tex]\large\underline\red{\sf \implies Solution :- }[/tex]
1) A figure formed by line segments only is called a polygon .
2) Perimeter of a regular polygon is Number of sides × Measure of each side .
3) Perimeter of a irregular polygon is sum of all sides .
4) Two circles with same centre but different radii is called Concentric circles.
5) Ratio of circumference of circle to its diameter is pie and is named by Greek letter π .
6) Distance around the circle is called circumference.
7) A chord of the circle contains exactly two points on a circle.
8) 1 hectare = 10,000 m²
I hope it helped ツA group of friends wants to go to the amusement park. They have no more than $95
to spend on parking and admission. Parking is $12.25, and tickets cost $17 per
person, including tax. What is the maximum number of people who can go to the
amusement park?
Answer:
4
Step-by-step explanation:
95 - 12.25 = 82.75
82.75 ÷ 17 = 4.867
I will mark you brainiest if you can answer this
Answer:
y=2x
Step-by-step explanation:
y= 2x
b is 0 because there is no y-intercept and it's going up 2 right 1 so the slope is 2
Answer:
Step-by-step explanation:
Chicken nugget
FIND A AND B I WILL AWARD BRAINLIEST
Answer:
a = 7.4
b = 9.6
Step-by-step explanation:
set up a proportion to find 'b':
XN / NY = MN / NO
8/b = 13/(b+6)
cross-multiply:
13b = 8(b+6)
13b = 8b + 48
5b = 48
b = 9.6
set up a proportion to find 'a':
XN / XY = MN / MO
8/a = 13/12
cross-multiply:
13a = 96
a ≈ 7.4
pls help me. Will mark brainliest if right
Answer:
1st one
Step-by-step explanation: