Answer: a) 25%
b) 75% Chebyshev interval around the sample mean=(6,18)
Step-by-step explanation:
Given: Sample mean: [tex]\overline{x}=12[/tex]
Sample standard deviation: s= 3
a) Coefficient of variation = [tex]\dfrac{s}{\overline{x}}\times100[/tex]
[tex]\\\\=\dfrac{3}{12}\times100\%=\dfrac{100\%}{4}\\\\=25\%[/tex]
b) According to the Chebychev's theorem,
75% of the population lies within 2 standard deviations from the sample mean.
i.e. 75% Chebyshev interval around the sample mean. = [tex](\overline{x}-2s,\ \overline{x}+2s)[/tex]
[tex]=(12-2(3),\ 12+2(3))\\\\=(6, 18)[/tex]
Hence, the 75% Chebyshev interval around the sample mean=(6,18)
Cashews cost $6.45 a
pound, how much
would it cost to buy
three and a quarter
pounds of cashews?
Answer:
$20.96
Step-by-step explanation: 6.45 times three equals 19.35 plus a quarter of 6.45 equals 1.6125 which you round to 1.61. So 19.35+1.61= 20.96
Multiply. Enter the product in simplest form.
uIN
=
9/10 multiplied 2/5
Answer:
When multiplying fractions, multiply the top number by the top number, and the bottom number by the bottom number.
So we have: (9x2)/(10x5).
This simplifies to: 18/50, or 9/25.
Let me know if this helps!
write the expression in radical form. 2 4/5
Answer:
its C i believe i put it in a calculator and it gave me that answer
How do you find the area of a triangle? How is it similar to finding the area of a rectangle and how is it different?
Answer: You find the area by multiplying all the sides up. It is similar because a triangle needs to be times by bxh and so does a rectangle. They're different because they are different shapes
Step-by-step explanation:
What is the result of converting 6160 yards to miles? (Remember that 1 mile =
1760 yards.)
A. 2.5 miles
B. 4 miles
C. 3.5 miles
D. 3 miles
Answer:
C. 3.5 miles
Step-by-step explanation:
1 mile =1760 yards
Using the conversion factor
6160 yds * 1 mile/ 1760 yds = 6160/1760 miles = 3.5 miles
geometric mean of 32 and 18
Answer
Geometric mean: 24
Please help will give Brain
Answer:
6.82
Step-by-step explanation:
15/11=x/5
(15/11)5=6.81818181818
Find the area of a trapezoidal tabletop, if its parallel sides are 2 m and 3 m long and the perpendicular distance
between them is l m.
Answer:
The area of the trapezoidal table top is 2.5 m²
Step-by-step explanation:
The area, A, of a trapezoid is given as half times the sum of the parallel side multiplied by the perpendicular distance between them
Therefore, we have;
[tex]A = \dfrac{a + b}{2} \times h[/tex]
The given parameters of the trapezoidal table top are;
The length of the parallel sides = 2 m and 3 m
The length of the perpendicular distance between the parallel sides = 1 m
Where, for the rectangular table top, we have;
'a', and 'b' = The lengths of the parallel sides = 2 m and 3 m respectively
h = The perpendicular distance between the parallel sides = 1 m
By substituting in the values, we have;
[tex]A = \dfrac{2 \ m + 3 \ m}{2} \times 1 \ m = 2.5 \ m^2[/tex]
The area of the trapezoidal table top, A = 2.5 m².
Care este cel mai mic număr dintre 95.999,96.959,99.595 și 99.995 la care cifra unităților de mii este 5
Răspuns:
95.999
Explicație pas cu pas:
Care este cel mai mic număr între 95.999; 96.959; 99.595 și 99.995, unde numărul de mii este 5
95.999 = Nouăzeci și cinci de mii nouă sute nouăzeci și nouă
96.959 = Nouăzeci și șase de mii nouă sute cincizeci și nouă
99595 = Nouăzeci și nouă de mii cinci sute nouăzeci și cinci
99995 = Nouăzeci și nouă de mii, Nouă sute nouăzeci și cinci.
Folosind cunoștințele despre linia numerică:
95.999 <96.959 <99.595 <99.995
Pls help pls pls than you
Answer:
b
Step-by-step explanation:
8*5=40
40*1/3=40/3
Solve the system by substitution.
y= 10x
y= 2x - 16
Answer:
y = 16x5 which is 80 and x is 64
Step-by-step explanation:
Please helppppp I’m almost done with itttt
The answer is [tex]\frac{5}{10}[/tex]
And that is correct
Answer:
5/10
Step-by-step explanation:
can be reduced to 1/2 or 0.5
Example 6: The area of a rectangle is 3.6 meters. Th
base of the rectangle is 3 meters. Which equation
can be used to find h, the height of the rectangle?
PLEASE HELP
A. 3.6 + h = 3
B. 3.6 = 3h
B. 3.6 = h - 3
D.3.6 = 4
Answer:
B. 3.6 = 3h
Step-by-step explanation:
Area of rectangle formula :-
A = L × W
3.6 = 3 × W OR the answer choic it gave is 3.6 = 3h.
Hope this helps, thank you !!
help ill give brainliest
Answer:
x = 2
y = -3
Step-by-step explanation:
6x+6y = -6
x = -5y-13
substitute for x
6(-5y-13) + 6y = -6
-30y-78+6y = -6
-24y-78 = -6
add 78m to each side
-24y = 72
divide each side by -24
y = -3
x =-5(-3)-13 = 2
A local little league has a total of 65 players, of whom 40% are left-handed. How many left-handed players are there?
Answer:
26 are left-handed
Step-by-step explanation:
"A cylindrical container has a radius of 25 inches and a height of 31 inches. What is the volume of
the container?
Volume =
Use the formula:
Radio= r, Height= h
V= 3.14xrx2h
r =25, h=31
V= 3.14 x 25 x 2 (31) =. 4867
V= 4867 cubic inches
Step-by-step explanation:
NEED HELP EMERGENCY ‼️
Answer:
A. Reflect across the y-axis
Step-by-step explanation:
if the negative sign was outside the radical then it would've been a reflection on the x-axis.
Margo added three multi-digit decimal numbers. The first number was 5.19. The second number was 10 times the first number. The third number was 10 times the second number. What was the sum?
Answer: 576.09
Step-by-step explanation:
First number = 5.19.
The second number was 10 times the first number which will be:
= 5.19 × 10
= 51.9
The third number was 10 times the second number. Thus will be:
= 51.9 × 10
= 519
The sum of the numbers will be:
= 1st number + 2nd number + 3rd number
= 5.19 + 51.9 + 519
= 576.09
Hopkins has a 1 meter wire using to make clocks. Each fourth meter is marked off and divided into 5 smaller equal lengths.
Complete question :
Mr. Hopkins has a 1 meter wire he is using to make clocks. Each fourth meter is marked off with 5 smaller equal lengths. If Mr. Hopkins bends the wire at ¾ meter, what fraction of the marks is that?
Answer:
15 th ; 15/20
Step-by-step explanation:
Length of wire = 1 m
Number of fourth length possible = 1 ÷ 1/4 = 1 * 4/1 = 4
Each fourth length divided into 5 equal sizes :
Hence. Total number of equal spaced division :
5 * 4 = 20
If wire is bent at 3/4 meter :
Fraction of the mark
3/ 4 of 20
3/4 * 20
(3 * 20) / 4
60 / 4
= 15th
= 15/ 20
Please help will give Brain!!
Answer:
x=3
Step-by-step explanation:
-145.035 ÷ 75 I’ll give you brainliest :p
Answer:
[tex]-1.9338[/tex]
Step-by-step explanation:
What is a 20% tip on a $40 haircut?
Answer:
$8.00 tip
$48.00 total (haircut+tip)
Step-by-step explanation:
40 x .20 = 8
40 + 8 = 48
Answer:
Step-by-step explanation:
please help solve this
(8x-4)(x^{3}-x-5)
HELP I NEED HELP ASAP
Which best describes the linear correlation between x and y?
A map website claims to be available 99.995% of the time (measured in minute long increments). Suppose
that we took random samples of n = 1000 minutes from the population of minutes in a year and
computed the proportion of minutes in each sample for which the website was available. We can assume
the website's claim is accurate.
What will be the shape of the sampling distribution of the proportions of minutes in which the website is
available?
Choose 1 answer:
O Approximately normal
Uniform
Skewed to the right
Skewed to the left
Answer:
Skewed to the left
Step-by-step explanation:
Khan Academy
The shape of the sampling distribution of the proportions is "approximately normal" is the correct answer.
What is the sampling distribution of proportion?"The sampling distribution of proportion measures the proportion of success, i.e. a chance of occurrence of certain events, by dividing the number of successes i.e. chances by the sample size n".
For the given situation,
Total number of random samples = 1000
A map website claims to be available of time = 99.995%
⇒ [tex]0.99[/tex]
Let us assume the website's claim is accurate.
Sample proportions closest to 0.6 would be most common, and sample proportions far from 0.6 in either direction would be progressively less likely. In other words, the shape of the distribution of sample proportion should bulge in the middle and taper at the ends: it should be somewhat normal.
Hence we can conclude that the shape of the sampling distribution of the proportions is "approximately normal" is the correct answer.
Learn more about the sampling distribution of the proportion here
https://brainly.com/question/18957309
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!!!!PLEASE HELP, PLATO TEST AND WILL GIVE FIRST CORRECT SERIOUS ANSWER BRAINLIEST!!!!
How many possible 3-digit area codes exist If 0 can't be the first digit, but digits can repeat?
A total of _?_ different 3-digit area codes exist.
The number of possible 3 - digit codes would be 900.
What is combination?"A combination is a way of selecting items from a collection."
For given situation,
It is a three digit code with 0 can't be the first digit.
This means the for this combination first digit can takes values from 1 - 9 and the second and third digits can take values from 0 - 9.
So, the number of possible 3 - digit codes would be,
9 × 10 × 10 = 900
Therefore, the number of possible 3 - digit codes would be 900.
Learn more about permutation and combination here:
https://brainly.com/question/13387529
#SPJ2
Which verbal expression represents the following algebraic expression?
10+4(9)
Answer:
the sum of 10 and the product of 4 and 9
Step-by-step explanation:
A U.S. penny has a mass of 2.5 grams. A U.S. quarter has a mass of 5.67 grams. What is the total mass of the two coins?
What is the measure of the angle in degrees? (Write number in answer only) help me muhahahah
Step-by-step explanation:
it is 18 degrees.
I guess
114.3 is what percent of 288? Round to the nearest hundredth. Please don’t get this wrong.
Answer:
39.69%
Step-by-step explanation:
Hope this helps!!