Answer:
radius is 4/4 cm meaning its 1 cm, and since diameter is twice the radius its 2cm.
Step-by-step explanation:
According to the 2000 U.S. Census, 80% of Americans over the age of 25 have earned a high school diploma. Suppose we take a random sample of 120 Americans and record the proportion, p, of individuals in our sample that have a high school diploma.
Answer:
a) The mean is 0.8.
b) The standard deviation is 0.0365.
c) Normal
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
80% of Americans over the age of 25 have earned a high school diploma.
This means that [tex]p = 0.8[/tex]
Suppose we take a random sample of 120 Americans
This means that [tex]n = 120[/tex].
Question a:
The mean is:
[tex]\mu = p = 0.8[/tex]
The mean is 0.8.
Question b:
The standard deviation is:
[tex]s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.8*0.2}{120}} = 0.0365[/tex]
The standard deviation is 0.0365.
Question c:
By the Central Limit Theorem, approximately normal.
a) The mean is 0.8.
b) The standard deviation is 0.0365.
c) Normal
Here, we have,
we know that,
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean x and standard deviation σ, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean x and standard deviation s = σ/√n .
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean x=p and standard deviation s=√p(1-p)/n
80% of Americans over the age of 25 have earned a high school diploma.
This means that p=0.8
Suppose we take a random sample of 120 Americans
This means that n=120.
Question a:
The mean is:
x=p=0.8
The mean is 0.8.
Question b:
The standard deviation is:
s=0.0365
The standard deviation is 0.0365.
Question c:
By the Central Limit Theorem, approximately normal.
Learn more about standard deviation here:
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Consider the three isotopes of carbon. What do the three isotopes have in common? Choose all that apply.
A)
They have the same atomic number.
B)
They have the same number of protons.
c)
They all have four valence electrons.
D)
They have the same number of neutrons.
E)
They have the same average atomic mass number,
Answer:
a) they have the same atomic number.
c) they all have 4 valence electrons.
Draw the image of figure RSTU after a translation 2 units left and 2 units down and a reflection across the y-axis.
Answer:Just slide it to the left and 2 units down then plot the points Step-by-step explanation:
Answer:
Step-by-step explanation:
Slide it to the left and 2 units down
En una prueba de duración para determinar la vida útil de un nuevo tipo de lámpara lanzada al mercado, los datos de la muestra se distribuyeron de manera casi normal. Se calculó una vida útil
promedio de 7000 hrs. y una desviación de 520 hrs. Halla el porcentaje de lámparas que tendrán
una vida útil
a) entre la media y 7600hrs.
b)entre 6500 hrs y 7600 hrs.
c) mas de 7600
Answer:
no habla espenol :((
Step-by-step explanation:
Suppose you invest $200 at a 7% annual rate for one year. How much interest would you earn?
If you extend a rectangle along its 3rd
dimension, you form a
A.cylinder
B.cube
C.rectangular prism
D.triangular prism
Answer:
C. rectangular prism
Step-by-step explanation:
Luisa’s bank offers a 13% simple interest rate on investment accounts. How much money would Luisa haved in her account if she invests $2,000 for 4 years?
i apriciate any help, thank you!
Answer:c
Step-by-step explanation:
The amount of time required to reach a customer service representative has a huge impact on customer satisfaction. Below is the Excel output from a study to see whether there is evidence of a difference in the mean amounts of time required to reach a customer service representative between two hotels. Assume that the population variances in the amount of time for the two hotels are not equal. What is the smallest level of significance at which the null hypothesis will still not be rejected
Answer:
The smallest level of significance at which the null hypothesis will still not be rejected is 0.05.
Step-by-step explanation:
The [tex]p-[/tex] value of t-test is [tex]0.725009[/tex]. This [tex]p-[/tex] value is greater than [tex]0.05[/tex].
Hence, the null hypothesis is not rejected and conclude that there is no sufficient evidence of a difference in the mean amount of time required to reach a customer service representation between two hotels.
The complete question is :
What is the slope of the line below? If necessary, enter your answer as a
fraction in lowest terms, using the slash ( 1 ) as the fraction bar. Do not enter
your answer as a decimal number or an equation.
The slope of line shown in the graph is 1.
What is Slope?A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the
change in y coordinate with respect to the change in x coordinate as,
m = Δy/Δx where, m is the slope
We have two points from the graph as (8, 8) and (5, 5)
So, the slope of line
Slope = (5- 8)/ (5-8)
slope= (-3)/ (-3)
slope = 1
Also, rise 3 units and run 3 units
Then, slope= Rise/ Run
slope= 3/3
Slope= 1
This, the required slope is 1.
Learn more about Slope here:
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Which Table Shows a Proportional Relationship? (no links :)
Answer:
a
Step-by-step explanation:
as x goes up by 1 y goes up by 4
what s the slope of (20,-5) (5,4)
Answer:
( 0 , 1 ) , ( 1 , 0 )
( − 5 , 9 ) , ( 3 , 0 )
( 0 , 9 ) , ( 8 , 6 )
Step-by-step explanation:
NO LINKS OR ELSE YOU'LL BE REPORTED!Only answer if you're very good at math.
Graph the equation below using the slope and y-intercept form.
Answer:
Answer below
Step-by-step explanation:
The y-intercept is 2, so you know that one point will be (0,2). The slope is 2/3 so you go 2 units up and 3 units to the right from (0,2).
ATTEMPT SCORE 7 / 13 01 Fill in the Blank Text Fill in the blanks to show the product. 1. (x2 + 6) (2 - 4) = x T 2 + 2 2 + 24 2. (2x + 5)(x - 3) = 2 x 2 + 1 C + 15 3. (3x + 2)(2.x + 5) = 6 + 19 2 + 10 4. (2x - 1)(x - 5) = 2 22 +11 2 + 5 02 Math Short Answer they said I got it wrong so please help.
If nuts cost $9.20 per pound, how much would 3 1/2 gallons cost?
Answer:
$32.20
Step-by-step explanation:
3 pounds are $27.60 and 1/2 a pound is half of $9.20.
So 3.5 gallons would be $32.20
Hope this helps!
14. The measure of Fis 110. The measure of 2E is 100°
What is the measure of D?
150°
According to given angles ,
Angle C=180- angle F (Linear pairs or st.line )
=70
Angle B = 180 - angle B (Same as above)
=80
Now
Angle D =Angle C + Angle B (Exterior angle property of a triangle)
=150°
Enjoy
solve the equation: 1/2n - 3 = 5
Answer:
n=16
Step-by-step explanation:
Let's solve your equation step-by-step.
1/ 2 n−3=5
Step 1: Add 3 to both sides.
1/ 2 n−3+3=5+3
1/ 2 n=8
Step 2: Multiply both sides by 2.
2*( 1/ 2 n)=(2)*(8)
n=16
Answer:
n=16
Answer:
n=16
Step-by-step explanation:
First you have to do 3+-3 to cross it out
then you have to add 3 to 5
lastly divide 8 and 1/2
Then you get your answer.
In which quadrant would you find the point 4 and 8
Answer:
Quadrant 1
Step-by-step explanation:
Find a function rule for the line that passes through the origin (0,0) and the point (-8, -19)
Answer:
B.
[tex]y = \frac{19}{8} x[/tex]
Step-by-step explanation:
Our slope is Rise over Run. In this case begin at the point (-8,-19) and find how many units up (rise) and how many units over (run) you must travel to reach the next point of (0,0).
A rubber ball is dropped from a height of 50 feet. Assume that each bounce of the ball is vertical
and that each bounce reaches a height of of the maximum height of the previous bounce. Wh.
will be the maximum height the ball reaches on the seventh bounce (rounded to the nearest
hundredth of a foot)?
13.95 feet
6.82 feet
11.63 feet
16.74 feet
Answer:
You left out a critical piece of information in the question.
"reaches a height of of the maximum height"
Step-by-step explanation:
Does x+ y < -4 have a solution?
Answer:
infinite solutions :)
Step-by-step explanation:
infinity solutions, there is infininte possibilitys.
need help due friday
Answer:
C. f(x) = 40(1/4)^x
Step-by-step explanation:
Check all the options:
When x = 0
A. f(x) = 1/4(40)^x
f(x) = 1/4(40)^0
f(x) = 1/4(1)
f(x) = 1/4
When x = 0
B. f(x) = 1/2(40)^x
= 1/2(40)^0
= 1/2(1)
f(x) = 1/2
When x = 0
C. f(x) = 40(1/4)^x
= 40(1/4)^0
= 40(1)
= 40
When x = 0
D. f(x) = 4(1/3)^x
= 4(1/3)^0
= 4(1)
= 4
A rectangle has an area of 93 square inches and a length of 15 inches. Find its perimeter
Pls answer ASAP!! Triangle ABC is shown.
3. Triangle JKL is the preimage. Write two algebraic
representations, one for the dilation to triangle I'K'L' and
one for the dilation to triangle J"K"L".
K
K
-241
J"
TL
HOMM Harcourt
Find the length of RS.
Answer:
If ET is 20 then DS should be 30 which makes RS 90
Step-by-step explanation:
Hope this helps. :)
Help me with this please!
please help with these questions (no links)
backk from ban!!!!!!!!
use the formula to evaluate the infinite series. Round to the nearest hundredth if necessary. 25+5+1+… formula for a converging infinite series. a1 is the first term and r is the common ratio. 
Answer:
5x+12=-14=180
Step-by-step explanation:
sdvasdfasdfasdfawsdfasd
Answer:
the answer would be 31.25
Step-by-step explanation:
a1=25
r=.2
25/1-.2=31.25
Write 0.00000000000000000000000000167 as a multiple of a power of 10.
Answer:
1.67x10^-27
hope this helps
have a good day :)
Step-by-step explanation: