Answers
Answer:
27,000
Step-by-step explanation:
Related Questions
All of the following monomials are factors of 24x^3z^2–6x^4z^3+12x^2z except:
F. x^2z
G. 3
H. 3x^2z
J. 4xz
K. 6xz
Answers
Answer:
G
Step-by-step explanation:
A consumer group has determined that the distribution of life spans for gas ranges (stoves) has a mean of 15.0 years and a standard deviation of 4.2 years. The distribution of life spans for electric ranges has a mean of 13.4 years and a standard deviation of 3.7 years. Both distributions are moderately skewed to the right. Suppose we take a simple random sample of 35 gas ranges and a second SRS of 40 electric ranges. Which of the following best describes the sampling distribution of the difference in mean life span of gas ranges and electric ranges?
a. Mean = 1.6 years, standard deviation = 7.9 years, shape: moderately right-skewed.
b. Mean = 1.6 years, standard deviation - 0.92 years, shape: approximately Normal.
c. Mean= 1.6 years, standard deviation = 0.92 years, shape: moderately right skewed.
d. Mean =1.6 years, standard deviation =0.40 years, shape: approximately Normal.
e. Mean =1.6 years, standard deviation =0.40 years, shape: moderately right skewed.
Answers
Answer:
b. Mean = 1.6 years, standard deviation - 0.92 years, shape: approximately Normal.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes 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.
Subtraction of normal Variables:
When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.
A consumer group has determined that the distribution of life spans for gas ranges (stoves) has a mean of 15.0 years and a standard deviation of 4.2 years. Sample of 35:
This means that:
[tex]\mu_G = 15[/tex]
[tex]s_G = \frac{4.2}{\sqrt{35}} = 0.71[/tex]
The distribution of life spans for electric ranges has a mean of 13.4 years and a standard deviation of 3.7 years. Sample of 40:
This means that:
[tex]\mu_E = 13.4[/tex]
[tex]s_E = \frac{3.7}{\sqrt{40}} = 0.585[/tex]
Which of the following best describes the sampling distribution of the difference in mean life span of gas ranges and electric ranges?
Shape is approximately normal.
Mean:
[tex]\mu = \mu_G - \mu_E = 15 - 13.4 = 1.6[/tex]
Standard deviation:
[tex]s = \sqrt{s_G^2+s_E^2} = \sqrt{0.71^2+0.585^2} = 0.92[/tex]
So the correct answer is given by option b.
Find the ratio of the following in the simplest form. 50 minutes to 1 hour
Answers
Answer:
5:6
Step-by-step explanation:
1 hour = 60 minutes
Ratio of 50 minutes to 1 hour;
50/60
5:6
Answer:
5:6
Step-by-step explanation:
1 hour= 60 min
50: 60
5:6
subtract (-4305) from |(-2508)+(-3502)|
Answers
answer:
10315
I used a calculator
step by step
(- 4305) - |(-2508) + (- 3502)|
Rewrite
Remove the parentheses
4305 - |
Calculate
4305 - |
- 2508 - 3502
- 6010
Calculate the absolute value
- 4305 - 6010
Calculate
Solution
- 10315
Find the voulume of a sphere. With a radius of 1/2
Answers
Answer:
Volume ≈ 0.5236
Step-by-step explanation:
V=4/3πr3=4/3·π·0.53≈0.5236
The world’s fastest flying insect is the dragonfly. It can fly 36 miles per hour. If a dragonfly flew in a straight path at this rate, what distance would it fly in 15 minutes? (1 hour = 60 minutes) *
Answers
Step explanation: 36x15=540, after that just break down your 60x. then, divide 60 ÷ 540, which it gives you equal 9x.
(will mark brainliest!!)
Answers
Answer:
the one with Heidy is the 3 one
the 6th one is E
Step-by-step explanation:
The period of y = sinx/4 is
Answers
Answer:
8π
Step-by-step explanation:
[tex]\frac{x}{4} =2 \pi\\x=2 \pi \times 4=8 \pi[/tex]
The angle measurements in the diagram are represented by the following expressions
Helpp
Answers
Answer:
5x-15 = 2x+21
x=12
Step-by-step explanation:
Vertical and Corresponding Angles can be used to prove so.
When six times a number is decreased by 8, the result is 10. The number is
Answers
Answer:
3
Step-by-step explanation:
6 x 3 = 18 - 8 = 10
Start by finding an equation.
6x - 8 = 10
Add 8 to both sides of the equation.
6x = 18
Divide both sides of the equation by 6.
x = 3
What is 3 divided by 1/3?
Answers
Answer:
It will be 9
hope this helps
Answer:
9
Step-by-step explanation:
3/1 ÷ 1/3 = 3/1 · 3/1 = 9
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answers
Answer:
B) one solutionStep-by-step explanation:
to understand thisyou need to know about:linear equationPEMDAStips and formulas:[tex]\sf\text{a system of linear equation has only one solution if $\frac{a_1}{a_2}\neq \frac{b_1}{b_2}$}[/tex]given:[tex] \begin{cases}2x - 4y = - 1 \\ 8x - 11y = - 19 \end{cases}[/tex]let's solve:[tex] \sf substitute \: the \: value \: of \: a \: b : \\ \frac{2}{8} \ne \frac{ - 4}{ - 11} \\ [/tex][tex]\text{$\therefore$ the system of linear equation has only one solution}[/tex]
someone help please
Answers
Answer:
(0, 1) and (4, 7)
Step-by-step explanation:
We are going to find the equation that satisfy the question.
The equation of a line is: [tex]y=mx+b[/tex], where m is the slope and b is the y-intercept.
The problem gives us the slope and a point the line passes through.
In order to find b, we plug in the given point (2,4) and solve.
[tex]4=\frac{3}{2} *2+b[/tex]
[tex]4=3+b\\1=b\\[/tex]
The equation for the line is:
[tex]y=\frac{3}{2} x+1[/tex]
By plugging in the points to see if it is true, we get that only (0,1) and (4,7) are on the line.
are they parallel???????????????
Answers
because the slope is the same.
HELP PLS PLS pls pls
Answers
Answer:
129
Step-by-step explanation:
Answer:
129
Step-by-step explanation:
180 - 51 = 129
The Difference of 4 and k, divided by 16.
Answers
Answer:4-k÷6
Step-by-step explanation:
Challenger elementary school has 800 students every Wednesday 12% of the students stay after school for the chess club. How many students attend the chess club on wednesdays?
Answers
Answer:
96 people
Step-by-step explanation:
i used a calculator
CAN SOMEONE HELP PLEASE ASAP!!! ILL MAKE YOU BRAINLIEST
Answers
Answer:
I think the answer is D but I'm not 100 percent sure. I hope this helps
Step-by-step explanation:
I think I took this test before
What are the solutions to the following equation?
[m] = 8.5
The value of m is equal to 8.5 and
because each distance from zero is 8.5.
Answers
Answer: -8.5
Step-by-step explanation:
I got it right on edg
Answer -8.5
Step-by-step explanation:
Employees at Pete's Packaging earn time-and-a-half pay for all hours worked beyond 40 hours.
Last week an employee worked a total of 44.5 hours. How much overtime pay did the employee
earn if his regular pay rate is $12.28 per hour?
Answers
Answer:
82.89
Step-by-step explanation:
if the function f(x)=2x-3 and g(x)= 3/2x + 1 which is a tru statement?
1- f(0)>g(0)
2- f(2)=g (2)
3- f(8)=g(8)
4- g(4)<f(4)
Answers
Answer: 3 f(8)=g(8)
Step-by-step explanation:
2(8)-3=3/2(8)+1
16-3=12+1
13=13
Answer:
3 is true
Step-by-step explanation:
f(x) =2x - 3→ 2*8 - 3 =13
g(x) = 3/2x + 1 → 3/2(8) + 1 = 3*4 +1 = 14
An orange juice container starts with 6 7/8 cups of juice. How much orange juice is left after three 1 1 /4-cup servings are poured? WHO EVER HELPS WILL GET BRAINLIEST.
Answers
Answer:
answer is 3 1/8
Step-by-step explanation:
In the picture is what my teacher did.
Answer this correctly I’ll give brainalist + 10 points
Answers
The table represents an exponential function. What is the multiplicative rate of change of the function? 07 1 2 un un 3 2 2 5 2 25 2. 125 O 2 4 O 5
Answers
Answer:
Step-by-step explanation:
1/5
Answer: 1/5
Step-by-step explanation:
Solve the equation 3^x+3=5
Answers
3*x=2
X=0.67
Sorry if wrong but hope this helps.
How many chicks hiding? Explain how you know.
Answers
Divide x2 by x - 1. What is the value of the remainder?
A) 1
B) -1
C) 2
D) o
Answers
Answer:
I think it's B.
Step-by-step explanation:
Divide using polynomial division.
x + 1 + 1/ x − 1.
Maybe not 100% sure.
What is .06 x .2 please answer
Answers
Answer: .012
Step-by-step explanation: 6*2 is 12, and you can simply use the number of decimal points on the smaller term to get .012
Answer:
should be .12
Step-by-step explanation:
.06 multiplied by 2 is .12
Three-quarters of the junior members of a tennis club are boys and the rest are girls.
What is the ratio of boys to girls among these members?
Input note: give your ratio in its simplest form.
Answers
Answer:
7 quarter...................
Convert 45ft from feet to yards
PLS.Answer
Answers
Answer:
15 yards
Step-by-step explanation:
3ft=1yard
45/3=15