Three years​ ago, the mean price of an existing​ single-family home was ​$243,780. A real estate broker believes that existing home prices in her neighborhood are lower.(a)Determine the null and alternative hypotheses(b)Explain what it would mean to make a Type I error.​(c) Explain what it would mean to make a Type II error.​(a) State the hypotheses.H0:__ __$__H1:__ __$__​(Type integers or decimals. Do not​ round.)​(b) Which of the following is a Type I​ error?A. The broker rejects the hypothesis that the mean price is​$243,780​ when it is the true mean cost.B. The broker fails to reject the hypothesis that the mean price is ​$243780​, when the true mean price is less than ​$243780.C. The broker rejects the hypothesis that the mean price is​$243,780​, when the true mean price is less than ​$243,780D.The broker fails to reject the hypothesis that the mean price is ​$243,780​ when it is the true mean cost.​(c) Which of the following is a Type II​ error?A. The broker rejects the hypothesis that the mean price is​$243,780​ when the true mean price is less than ​$243,780B.The broker fails to reject the hypothesis that the mean price is ​$243,780​when it is the true mean cost.C. The broker fails to reject the hypothesis that the mean price is ​$243,780​, when the true mean price is less than ​$243,780D.The broker rejects the hypothesis that the mean price is​$243,780​, when it is the true mean cost.

Answers

Answer 1

(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


Related Questions

definición de variable independiente y variable dependiente

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Answer:

hhhhs jjeguuw iiwhrbmeo

URGENT URGENT URGENT!!!
HELP PLEASE!!

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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

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.

Answers

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.

Find the value of k, represented as a decimal rounded to the nearest tenth.

5/7 = 12/k

Answers

5/7 = 12/7
k= 16.8 .....

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 anyone tell me correctly​

Answers

[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

I hope it helped

I will mark you brainiest if you can answer this

Answers

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

Answers

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

Answers

Answer:

1st one

Step-by-step explanation:

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??

Answers

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

Can someone help me please

Answers

Answer:

8(n/4)

Step-by-step explanation:

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?

Answers

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!                                                          

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 :) ​

Answers

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:

160 divided by 7 rounded to the nearest hundredth

Answers

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:

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

Answers

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

6 (8j - 3l + 9 ) 12l + 14j

Answers

Answer:

5822j-15972

Step-by-step explanation:

Answer:

5822j-15972

Step-by-step explanation:

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

Answers

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.

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

Answers

Answer: A. Amount of each cashed check.

Step-by-step explanation:

145.95 - 2x = -4.05

2x=150

X=75

Turn y=-1/5x-4 into standard form

Answers

The answer would be x + 5y = -20.

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

Answers

Answer:

D)0.47160

Step-by-step explanation:

I think correct me of I'm wrong

what is the distance between 5,4 and -1,1

Answers

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 )

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

Answers

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

24 – 37x - 72
[tex]24 - 37x - {72}^{2} [/tex]
. factorise it​

Answers

Answer:

The answer is -37x - 48

Find the length of the third side.if necessary, round to the nearest tenth 24 18

Answers

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.

determine the value of the?
25x +30=?(5x+6)

Answers

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.

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?

Answers

Answer:

4

Step-by-step explanation:

95 - 12.25 = 82.75

82.75 ÷ 17 = 4.867

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)​

Answers

Answer:

If(x>y and x<50): # add semicolon

print(a+10) # one close bracket

add " " double quotes inside print statements

print("a+10")

The first step in solving 3+7(x-5)=2x+16 is to

Answers

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

Kiwihelp pretty much is correct

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?​

Answers

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 value of x and y

Answers

3x=6
3/3. 6/3
X=2

(2) +2=y-1
4=y-1
+1. +1
5=y

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.

Answers

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

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