Answer:
The z-test statistic for a hypothesis test in which the null hypothesis states that the population proportion, p, equals 0.14 if the following sample information is present (n = 200; x = 31) is z = .6114.
Step-by-step explanation:
The z-test statistic formula is:
[tex]\displaystyle z=\frac{\hat{p}-p}{\sqrt{\frac{p(1-p)}{n} } }[/tex]We are given x = 31 and n = 200, so we can solve for [tex]\hat{p}[/tex] : 31/200 = .155.
The population proportion, [tex]p=.14[/tex], is given in the problem.
We can substitute the known values into the z test statistic formula:
[tex]\displaystyle z = \frac{.155-.14}{\sqrt{\frac{.14(.86)}{200} } }[/tex][tex]\displaystyle z=\frac{.015}{\sqrt {.000602}}[/tex][tex]z=.6114[/tex]The z-test statistic for this problem is z = .6114.
If a house is 4,753 sq. ft, at the cost of $175/sq. ft what is the total cost of the house?
Answer:
$831,775
Step-by-step explanation:
$175 / sq ft and there are 4,753 square feet, so all we have to do is
175 x 4753 = 831775
Hope this makes sense. If you need further explanation, let me know!
- profparis
Answer:
$831,775
Step-by-step explanation:
the total cost of the house is 4,753 × 175 which is $831, 775
A.
B.
C.
D.
Please help
Answer:
I Think the answer is B I'm sorry if I'm wrong
Jacob can swim the 400-meter distance in 6.4 minutes now.How many more meters per minutes will Jacob need to swim to reach is goal?Explain how you found your answer.
Answer:
62.5 meters per minutes
Step-by-step explanation:
Help picture below problem 9
Answer:
sometimes...
Step-by-step explanation:
mark me brainliest
A parallelogram is sometimes a rectangle.
A) sometimes
Explanation:because the vertices join the adjacent sides at 90° angles and it has two sets of parallel sides and two pairs of opposite sides that are congruent. (a rectangle has all of the properties of a parallelogram.)
If x²+ y²= 80 and xy = 12, find the value of (x - y)².
[tex](x-y)^2\\\\=x^2+y^2 -2xy\\\\=80-2(12)\\\\=80-24\\\\=56[/tex]
GIVING BRAINLIEST!
2pi8^2 + 2pi8*8=?
the answer should be 150, show the steps
Answer:
256π
Step-by-step explanation:
2π(8²) + 2π(8)(8) <== exponents first
2π(64) + 2π(64) <== multiply
128π + 128π <== add
256π <== final answer
Note: 8 * 8 can also be written as 8²
Hope this helps!
Answer:
256π
Step-by-step explanation:
4π(8²) = 4π(64)= 804.2477193
804.2477193/π = 256π
The circumference of circles
[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
Let's find the circumference of given circle ~
Circumference :
[tex]\qquad \tt \dashrightarrow \: \pi{d}^{}[/tex]
where, d = diameter
Now, let's calculate it ~
[tex]\qquad \tt \dashrightarrow \: c = 4×\pi{}^{}[/tex]
[tex]\qquad \tt \dashrightarrow \: c = 4\pi\: \: in[/tex]
That's the answer I terms of π, but we can also plug in the approximate value of pi as 3.14
[tex]\qquad \tt \dashrightarrow \: c = 4 \times 3.14{}^{} \\\qquad \tt \dashrightarrow \: c = 12.56\: \: in\\\qquad\tt \dashrightarrow \: c \approx 12.6\: \: in[/tex]
Write 0.00205 in scientific notation.
Answer:
Therefore, 0.00205 in scientific notation is 2.05 × 10-3 and It has 3 significant figures. In scientific e-notation it is written as 2.05e-3.
Step-by-step explanation:
Answer:
[tex]2.05 \times 10 ^{ - 3} [/tex]
The clients who get haircuts at Cameron's salon have a variety of hair colors.
brown 7
black 7
blond 4
4
What is the experimental probability that the next client to get a haircut Cameron's salon will
have blond hair?
Write your answer as a fraction or whole number.
P(blond)
Using it's concept, it is found that there is a [tex]\frac{2}{9}[/tex] experimental probability that the next client to get a haircut Cameron's salon will have blond hair.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
For an experimental probability, these number of outcomes are taken from previous trials.
In this problem, 4 out of 18 clients had blond hair, hence the probability is given by:
P(blond) = 4/18 = 2/9
More can be learned about probabilities at https://brainly.com/question/14398287
#SPJ1
The sets J and E are given below.
J= {2, 3, 4, 8)
E={0,1,3,7)
Find the intersection of J and E.
Find the union of J and E.
Answer:
See below
Step-by-step explanation:
Intersection is the elements that are in both sets : {3}
Union adds them together { 0 1 2 3 4 7 8 }
Keith wants to give 1/2 an apple to each of his 6 friends. How many apples does he need?
Answer:
12 apples is the answer because 1/2 divided by 6 is 12
Step-by-step explanation:
I NEED HELP ASAP!!!!!!!!!!!
Answer: Below
Step-by-step explanation:
Let's start with 12. Going off of basic quadrilateral rules, adjacent angles will be equal to 180. So we make the equation:
8x - 12 + 3x + 5 = 180
Simply.
11x - 7 = 180
11x = 187
x = 17
Since R = P, R = 3(17) + 5 = 56
Now with 14.
We know ABC is both 115 and 4x+6, so:
115 = 4x + 6
109 = 4x
x = 27.25
ADB is 6x - 11, so 6(27.5) - 11 = 152.5
12) 56
14) 152.5
) A random sample of n measurements was selected from a population with unknown mean μ and standard deviation σ. Calculate a 95% confidence interval for μ for the following situation:
n=20, x¯¯¯=63.8, s=2.84
≤μ≤
Answer:
ask MisterBrainly for help
Question - I need more ----- inside of my life
Answer:
Hi, this is not really a question it is a statement but if you really need help with math then you can provide an actual question.
Step-by-step explanation:
Answer:
Then you must improve to get more things in your life
What did is the total volume,in cubic feet of the shape below
Answer:
64ft^3 (The ^3 is meant to be cubed) 64 feet cubed.
Step-by-step explanation:
The picture has already split the two shapes.
*Remember Volume Formula: LWH or Length times Width times Height.*
The first shape is 4ft x 2ft x 2ft
The second shape is a little bit of a fuss but it's alright.
*Talking about the length of Shape no.2*
Since the second shape is longer than the first one (by length). You need to double it meaning: 4x2 or 4+4 = 8ft
The second shape is 8ft x 2ft x 3ft
First shape should have a volume of 16ft
Second shape should have a volume of 48ft
Now, you need to add the two volumes:
48ft + 16ft = 64ft cubed
i need the answer pls help pls
Answer:
B
Step-by-step explanation:
x² - 8x + 97 = 0
the general form to solve such quadratic equations is
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
a = 1
b = -8
c = 97
so, we get
x = (8 ± sqrt((-8)² - 4×1×97))/(2×1) =
= (8 ± sqrt(64 - 388))/2 = (8 ± sqrt(-324))/2 =
= (8 ± sqrt(324×-1))/2 = (8 ± 18×i)/2 = 4 ± 9i
A printer can print 32 pages in 80 sec.
The rate in lowest terms is______?
Answer:
0.4 pages per second
24 pages per minute
1 page can be printed every 2.5 seconds
Each answer is technically correct, use the one that's most appropiate
Step-by-step explanation:
32 pages in 80 seconds
32 / 80 = 0.4 pages per second
0.4 / 1
If they want it in minutes, multiply both sides by 60 seconds
0.4 * 60 / 1 * 60
24 pages per minute
Write the following in words in international system with comas:
34407615
Answer:
34,407,615
Explanation : 34 millions 407 thousands 615
Enter the output values (Y) with the given function and input values (X).
Answer:
y = 3x - 2
X Y
6 16 3(6)-2 -> 18-2 = 16
5 13 3(5)-2 -> 15-2= 13
4 10 3(4)-2 -> 12-2= 10
7 19 3(7)-2 -> 21-2= 19
A 6 foot wide painting should be centered on a 10 foot wide wall. How many feet (x) should be on each side of the painting?
Answer:
The answer would be two feet.
Step-by-step explanation:
Step 1. Do 10-6 (10 being the total space and 6 being the painting)
Step 2. Get the answer of 4.
Step 3. Divide four by 2 because it needs to be centered.
Step 4. Get the answer of two feet on each side.
I hope this helps! :)
PLEASE HELP ME FIND THE SURFACE AREA OF THIS PRISM
Answer: i don't know
Step-by-step explanation: i don't know sorry
A rectangular garden is 15 ft longer than it is wide. Its area is 700 ft. What are its dimensions?
Step-by-step explanation:
Given :-
The length of rectangular garden is 15 feet longer than its widthThe area of rectangular garden is 700ft²To find:-
Dimensions of rectangular gardenSolution:-
According to the question , let the length of rectangular garden be x and width be x + 15
We know , the formula for area of rectangular garden is L × B
putting the known values ,
700ft.² = X × (X + 15)
700 ft. ² = x² + 15x
x² + 15 x - 700 = 0
By factorising it we get , x = 20
So , the dimensions of rectangular garden are 20 feet and 35 feet respectively for length and width.
10. Cindy is wrapping a birthday present for her sister. The present is in a 10 points
box that has a length of 10 in, a width of 6 in and a height of 4 in. If the
wrapping paper costs $0.25 per square inch, how much would it cost to
wrap Cindy's present? *
Answer:
$648
First find the surface area, and then multiply that by 12 for the inches, then multiply that by the cost
Answer:
$62
Step-by-step explanation:
First find the surface area of the box: 2(lw+lh+wh) = 2(60 + 40 +24) = 124(2) = 248
Now create a ratio to find the total cost:
[tex]\frac{0.25}{1} = \frac{x}{248}[/tex]
Solve for x by cross multiplying -
x=62
please help me please pleasr please
Answer:
which one's anwer you want
2. length= 65 ft width=24 m area=135 in2
Find the area of the figure.
answer:
804.980cm²
explanation:
attached
--
if this helped, please consider giving brainliest !
What is the answer to this? Due in 3 minutes!
a
Weekly wages at a certain factory are
normally distributed with a mean of
$400 and a standard deviation of $50.
Find the probability that a worker
selected at random makes between
$250 and $300.
Answer using the 68 - 95 - 99.7 rule.
[ ? ]%
Answer:
2 Answers By Expert Tutors
Since 400 is the mean and the standard deviation is 50, $400-$450 is +1 standard deviation. One standard deviation is 34.1% probability that the worker's wages would fall in this range.
2 tan x - Sin 2x ÷ 2 Sin^2 x = tan x
Looks like the claim is
(2 tan(x) - sin(2x)) / (2 sin²(x)) = tan(x)
Recall the double angle identity for sine:
sin(2x) = 2 sin(x) cos(x)
as well as the definition of tangent:
tan(x) = sin(x) / cos(x)
Then on the left side, we can cancel factors of 2 sin(x) to get
(2 sin(x) / cos(x) - 2 sin(x) cos(x)) / (2 sin²(x))
= (1/cos(x) - cos(x)) / sin(x)
Multiply this by cos(x)/cos(x) :
(1/cos(x) - cos(x)) / sin(x) = (1 - cos²(x)) / (sin(x) cos(x))
Recall that for all x,
sin²(x) + cos²(x) = 1
so that
(1 - cos²(x)) / (sin(x) cos(x)) = sin²(x) / (sin(x) cos(x))
= sin(x) / cos(x)
= tan(x)
as required.
Find the surface area of the pyramid.
Answer:
i think the answer is 87.
Step-by-step explanation:
i think its 87.
In an experiment, the probability that event A occurs is 7/8, the probability that event B occurs is 7/9, and the probability that events A and B both occur is ¾ . What is the probability that A occurs given that B occurs?
Question 5 options:
0.829
0.125
0.762
0.964
Answer:
Here is answer
Step-by-step explanation:
sorry if it is wrong
I think 0.762 in the answer