Answer:
The test statistic is z = 2.7.
The pvalue of the test is 0.0035 < 0.05, which means that this sample provides enough evidence to conclude that the average house size has increased in the Hays County since 2010.
Step-by-step explanation:
The average size of a new house built in a Hays county in 2010 was 1,872 square feet. Evidence that it has increased?
This means that the null hypothesis is:
[tex]H_0: \mu = 1872[/tex]
And the alternate hypothesis is:
[tex]H_a: \mu > 1872[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
1872 is tested at the null hypothesis:
This means that [tex]\mu = 1872[/tex]
Sample of 40. The average square footage was 2,031 with a standard deviation of 373 square feet.
This means that [tex]n = 40, X = 2031, \sigma = 373[/tex]
Value of the test-statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{2031 - 1872}{\frac{373}{\sqrt{40}}}[/tex]
[tex]z = 2.7[/tex]
Pvalue and decision:
The pvalue of the test is the probability of finding a sample mean above 2031. This is 1 subtracted by the pvalue of z = 2.7.
Looking at the z-table, z = 2.7 has a pvalue of 0.9965
1 - 0.9965 = 0.0035
The pvalue of the test is 0.0035 < 0.05, which means that this sample provides enough evidence to conclude that the average house size has increased in the Hays County since 2010.
What is the volume of a figure with that is 2 inches wide, 7 inches tall and 9 inches
Pls help
Answer:
126
Step-by-step explanation:
What is the volume of a figure with that is 2 inches wide, 7 inches tall and 9 inchesn = Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.
2x7x9 = 126
Answer:
126 inches³
Step-by-step explanation:
The volume of a figure is l×w×h.
So,
9 × 2 × 7 = 126
17. Find the ratio of the perimeter to the area of the square shown.
x + 3
x + 3
Answer:
4x+12/x^2+9
Step-by-step explanation:
Perimeter
x+3+x+3+x+3+x+3
Area
(x+3)(x+3)
Thank u guys for helping me out but please I need help
Answer:
integers
Step-by-step explanation:
Integers include positive and negative including 0, but not including fractions or decimals
Answer:
Integers because:
Whole doesn't include negatives.
Irrational includes both, but not this one.
Natural numbers are only possitive values.
Is (6, 0) a solution to the equation y = 8x?
Answer:
no
Step-by-step explanation:
(6,0) would be 0 = 8(6), so no
Can the following lengths be
used to form a right triangle?
Explain.
Length 1: 15 units
Length 2: 20 units
Length 3: 35 units
For the following geometric sequence, find the recursive formula.
[-80, 20, -5, ...}
HElp And THAnkS ASAP
Answer:
B. M - J = 6
Step-by-step explanation:
Mike won 6 more games than Jeanie
so J + 6 = M
Subtract J from both sides of the equation
J - J + 6 = M - J
Simplify
6 = M - J
or
M - J = 6
If a pyramid prism has a height of 12 ft and a square base with side = 10
ft. What is the surface are of the pyramid?
160 sq. ft
1,340 sq. ft
240 sq. ft
340 sq. ft
5. Higher Order Thinking Explain how to
find 35 + 9.
Use equations to show your thinking.
6. A
to us
9 +3
Answer:
9+8=17+9+9=18=35+9=44
Answers to the blank please
Answer:
Step-by-step explanation:
MP=NQ
3x-2=2x+8
x=10
MP=3x-2=28
NQ=2x+8=28
there's a 100 dollar stuck up 12 feet up a building and you buy a 15 foot ladder that can be safely leaned at a 60 degree angle, can you reach the bill?
Let z = 11 (cos(1) + i sin (1) and w=7(cos(1) + i sin (1)
What is zw?
A: 11/7(cos(pi/6) + i sin (pi/6)
B: 77(cos(pi/6)+ i sin (pi/6)
C:12(cos(pi/12) + i sin ( pi/12 )
D: 77 (cos(pi/12) + i sin (pi/12)
The midpoint of QR is (4, -1).
Q = (3.1)
What are the coordinates of point R?
Answer:
(5,-3)
Step-by-step explanation:
Given that,
The coordinates of Q = (3,1)
The midpoint of QR = (4,-1)
We need to find the coordinates of point R.
We know that, according to mid-point theorem,
[tex](x_m,y_m)=(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2})[/tex]
Let (x₂,y₂) be the coordinates of point R.
So,
[tex](4,-1)=(\dfrac{3+x_2}{2},\dfrac{1+y_2}{2})\\\\\dfrac{3+x_2}{2}=4\ and\ \dfrac{1+y_2}{2}=-1\\\\3+x_2=8\ and\ y_2+1=-2\\\\x_2=5\ and\ y_2=-3[/tex]
So, the coordinates of point R is (5,-3).
The domain of rational function gis the same as the domain of rational function f. Both f and g have a single x-intercept at x = -10. Which
equation could represent function g?
A. g(x) = 10px)
B. 8(x) = f(x + 10)
C. 8(x) = f(x) + 10
D. g(x) = f(x) - 10
Measurement of a circle
(Giving brainliest to correct answer)
Answer:
See below
Step-by-step explanation:
1. True
2. False
3. True
Find the area of the figure. HELP PLZ
Answer: 1075 sq. ft
Step-by-step explanation:
A = length times width
First split the shape into two rectangles
Area of rec 1 = 25 times 8 = 200
Area of rec 2 = 35 times 25 = 875
200+875 = 1075 sq. ft
For 11-14, fill in the blank with >, <, or =.
Answer:
first one is =
second one is ≥
third one is =
forth one is =
Drag each number from the box to complete the equations that follow. Each number may be used once, more than once, or not at all.
(36÷__) − (36 ÷__ )=5
(__× 3) − __ =12
these are the choices 12 8 9 and 4
Answer:
(36/4)-(36/9)=5
(8*3)-12=12
Answer:
(36÷4) - (36÷9) = 5
(8x3) - 12 = 12
David and Patti each decomposed 138. David wrote 1 + 1/8 + 3/8. Patti wrote 4/8+2/8+5/8.
Who Is Correct?
No downloads
No Links
No files
No bitly.
Answer:
Both are wrong.
Step-by-step explanation:
We have that:
Both decomposed the fraction [tex]\frac{13}{8}[/tex] into a sum of fractions. Whoever's decomposition sum has a value of [tex]\frac{13}{8}[/tex] is correct.
David:
[tex]1 + \frac{1}{8} + \frac{3}{8} = \frac{8}{8} + \frac{1}{8} + \frac{3}{8} = \frac{8+1+3}{8} = \frac{12}{8}[/tex]
[tex]\frac{12}{8} \neq \frac{13}{8}[/tex], which means that David is wrong.
Patti
[tex]\frac{4}{8} + \frac{2}{8} + \frac{5}{8} = \frac{4+2+5}{8} = \frac{11}{8}[/tex]
[tex]\frac{11}{8} \neq \frac{13}{8}[/tex], which means that Patti is wrong.
So the answer is that both are wrong.
Pls someone help me with this question pls
Answer:
c
Step-by-step explanation:
trust me i am did the test aredy
Been stuck for the longest
Answer:
Since 2√7 = 5.29, move the circle over to the third dash after the five.
Step-by-step explanation:
Since 2√7 = 5.29, move the circle over to the third dash after the five.
GIVING OUT BRAINLIEST ANSWER HELP ME ASAP!!! pleaseeeee
Answer:
the answer is 29.7
Step-by-step explanation:
inverse tangent of (4/7)
A gain of seven yards in football is represented by 7. What number represents a loss of
seven yards?
A 0
B. 7
C. -(-7)
D. -7
Answer:
D. -7
Step-by-step explanation:
Since positive 7 represents a gain of seven yards, a loss would be represented by a negative number.
So, a loss of seven yards will be represented by -7.
So, the correct answer is D. -7
rewrite the expression using sixths 1 1/3 - 1/2 = 4/3 - 1/2
Answer:
8-3=8-3
Step-by-step explanation:
Solve 169x^2-42.25=0 by using square roots?
NEED HELP!!!
Answer:
x = 1/2 , x = -1/2
Step-by-step explanation:
Given equation;
169x² - 42.25
Find:
Solution of equation using square root
Computation:
169x² - 42.25
We know that 13² = 169 and 6.5² = 42.25
So,
[13x]² - [6.5]²
a² - b² = (a + b)(a - b)
So,
[13x]² - [6.5]² = [13x + 6.5][13x - 6.5]
So,
13x + 6.5 = 0 , 13x - 6.5 = 0
x = 6.5 / 13 , x = -6.5 / 13
x = 1/2 , x = -1/2
Find the real root of the equation x3 + x2 - 1 = 0 by
using iteration method.
Answer:
i cant help that much but u can try using photomath
What is the value of u? (pls help and no links)
Answer:
I think 44 degrees
Step-by-step explanation:
73-29=44
Answer:
44
Step-by-step explanation:
The value of u, combined with the angle directly next to it (with the measurement of 29°), is a vertical angle to the opposite given angle (73°).
Note that, by the definition of vertical angles, angles directly next and opposite of each other have the same measurement. Set the equation:
u + 29 = 73
Isolate the variable, u. Note the equal sign, what you do to one side, you do to the other. Subtract 29 from both sides:
u + 29 (-29) = 73 (-29)
u = 73 - 29
u = 44
44° is your answer for u.
~
A florist is filling 6 vases with some water. The line plot shows the amount of water the florist adds to the vases. which is the amount of water the florist needs to fill 6 vases the vases.
Answer:2 3/4
Step-by-step explanation:
You add 3/4+2/4+6/4 and get 11/4 and you make 2 3=4 hope this helps
Find the distance between the two points.
(4,5)
(-4,1)
✓ [?]
Enter the number that
goes beneath the
radical symbol.
9514 1404 393
Answer:
80
Step-by-step explanation:
The distance formula tells you the distance between the points is ...
d = √((x2 -x1)² +(y2 -y1)²)
d = √((4 -(-4))² +(5 -1)²) = √(8² +4²) = √(64 +16)
d = √80
The number under the radical is 80.
PLZ ANSWER NO FAKE LINKS OR SAYING I READY ISNT ALLOWED
Answer:
Answer 2 i think
i did it myself and that what got i might have done it wrong.