The two data sets shown below are almost identical. Which of the following
statements are true? (Select TWO)
Data Set 1: 32 41 51 63 66 71
Data Set 2: 32, 41, 51, 3 66, 71
The range of Data Set 2 is smaller than the range of Data Set 1.
The median of Data Set 2 is exactly 30 less than the median of Data Set 1.
The mean of Data Set 2 is exactly 10 less than the mean of Data Set 1.
The standard deviation of Data Set 2 is larger than the standard deviation of Data Set 1.

Answers

Answer 1

Based on the calculations, the two (2) statements which are true are:

The mean of Data Set 2 is exactly 10 less than the mean of Data Set 1.Option D.

How to calculate the range?

Mathematically, range can be calculated by using this formula;

Range = Highest number - Lowest number

Range 1 = 71 - 32

Range 1 = 39.

Range 2 = 71 - 3

Range 2 = 68.

Therefore, the range of Data Set 2 is not smaller than the range of Data Set 1.

How to calculate the mean?

Mathematically, the mean for these data sets would be calculated by using this formula:

Mean = [F(x)]/n

For the total number of Data Set 1, we have:

F(x) = 32 + 41 + 51 + 63 + 66 + 71

F(x) = 324.

Substituting the parameters into the formula, we have:

Mean = [F(x)]/n

Mean 1 = [324]/6

Mean 1 = 54.

For the total number of Data Set 2, we have:

F(x) = 32 + 41 + 51 + 3 + 66 + 71

F(x) = 324.

Substituting the parameters into the formula, we have:

Mean 2 = [264]/6

Mean 2 = 44.

Difference = Mean 1 - Mean 2

Difference = 54 - 44

Difference = 10.

Therefore, the mean of Data Set 2 is exactly 10 less than the mean of Data Set 1.

For the standard deviation of Data Set 1, we have:

SD₁ = √(1/n × ∑(xi - u₁)²)

SD₁ = √(1/5 × ∑(32 - 54)² + 1/5 × ∑(41 - 54)² + 1/5 × ∑(51 - 54)² + 1/5 × ∑(63 - 54)² + 1/5 × ∑(66 - 54)² + 1/5 × ∑(71 - 54)²)

SD₁ = 15.34.

For the standard deviation of Data Set 2, we have:

SD₂ = √(1/n × ∑(xi - u₂)²)

SD₂ = √(1/5 × ∑(32 - 44)² + 1/5 × ∑(41 - 44)² + 1/5 × ∑(51 - 44)² + 1/5 × ∑(3 - 44)² + 1/5 × ∑(66 - 44)² + 1/5 × ∑(71 - 44)²)

SD₂ = 24.88.

Therefore, the standard deviation of Data Set 2 is larger than the standard deviation of Data Set 1.

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Related Questions

The weekly salary of a security guard, $S, is based on the formula, S=B+8H where B is the basic wage in dollars, and H is the number of hours he is on duty per week.

(a) Given that the security guard received $710 for a total of 45 hours of work in a particular week, find the basic wage.

(b)
(i) Calculate the salary he received after working for 42 hours in one week.
(ii) At the end of another week, the security guard earned $662. Find the number of hours worked that week.​

[tex]\\[/tex]

ty! ~

Answers

Answer:

A. 350

B. (i) $686 (ii) 39 Hours

Step-by-step explanation:

Based on what's given..

A)

[tex]\sf S=B+8H[/tex]

[tex]\sf 710=B+8\times45[/tex]

[tex]\sf 710=B+360[/tex]

[tex]\sf B=710-360[/tex]

[tex]\boxed{\sf B= 350}[/tex]

B)

(i)

[tex]\sf S=350+8\times42[/tex]

[tex]\sf S=350+336[/tex]

[tex]\boxed{\sf S=686}[/tex]

(ii)

[tex]\sf 662=350+8H[/tex]

[tex]\sf 8H=662-350[/tex]

[tex]\sf H=312 \div 8[/tex]

[tex]\boxed{\sf H=39}[/tex]

help pls, thank you !!

Answers

Answer:

the first one is a lie

Step-by-step explanation:

caf is more 45 degrees than 25

Sarah was solving an equation for her Algebra
class. She wrote down the equation she got on a
piece of paper after completing step 2.
-3m = 2m + 20
Which equation below would represents what
algebraic property she used in step 2?

Answers

Dropped off my car

The golf club can send a team of four students
to the next golf tournament. If there are 18
Students in the club, How many different teams
Of 6 can be selected?

Answers

Answer:

18,564

Step-by-step explanation:

The formula is n! / (r!(n-r)!

n is the total number of people and r is the number of people to be picked

n = 18, r = 6

18! / (6!(18-6)!)

18! / (6!*12!)

Total combinations = 18,564

Answer:

3

Step-by-step explanation:

18 ÷ 6 = 3

check and make sure the answer is right so you do the opposite

3 × 6 = 18

how do i do this question?

Answers

Answer:

Step-by-step explanation:

since 2 sides are equal i.e. 6=6, It is an isosceles triangle

56+x+x=180

2x=180-56

x=62°

Please mark it as brainliest

Have a good day!


NEED HELP PLEASE

I can’t figure this question out. Hopefully you could help!

Answers

Answer:

see image

Step-by-step explanation:

If 21 people study French and everyone studies some language, then the other 4 people must be Spanish only students. 25 - 21 =4

Since 13 people study Spanish,

13-4=9

9 people must study both Fr and Sp.

If 9 people study BOTH, then

21-9=12,

12 people must be the Fr only people.

The arch-looking, upsidedownU is intersect.

Fr intersect Sp are the StudyBOTH people.

P(Both) = Both/Total

= 9/25

If you need %, divide 9÷25 and times by 100. That's 36%

F' means Not French people, which is Spanish only people (thankfully there are no No-Language-studiers bc they would count too)

P(F')

= P (not Fr)

= P (Sp Only)

= 4/25 = 16%

A triangle has sides with lengths of 9 centimeters, 12 centimeters, and 15 centimeters. Is it a right triangle?

Answers

Answer:

yes, it is a right triangle.

Step-by-step explanation:

trust

Which expressions are equivalent ( 0.2) 3 x ( 0.3 ) 4?

Answers

Hey there!

Assuming you meant….

(0.2)^3 * (0.3)^4

= 0.2^3 * 0.3^4

= 0.2 * 0.2 * 0.2 * 0.3 * 0.3 * 0.3 * 0.3

= 0.04 * 0.2 * 0.09 * 0.09

= 0.008 * 0.0081

= 0.0000648

≈ 0.000065


Therefore, your answer should be:

0.0000648


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

Step-by-step explanation:

[tex] \tt{}(0.2 {)}^{3} \times (0.3 {)}^{4} [/tex]

[tex]\tt{}0.3 \times 0.06 ^{3} [/tex]

[tex]\tt{} \frac{3}{10} \times ( \frac{3}{50} {)}^{3} [/tex]

[tex]\tt{} \frac{3}{10} \times \frac{ {3}^{3} }{ {50}^{3} } [/tex]

[tex]\tt{} \frac{ {3}^{4} }{10 \times 50 ^3 } [/tex]

[tex]\tt{} \frac{81}{10 \times 5 {0}^{3} } [/tex]

[tex]\tt{}6.48[/tex]

I need this pls!! I forgot my notes :(

Answers

Answer:

D

Step-by-step explanation:

when x = 0, y = 40

therefore you can pick either A or D only.

while x increases, y decreases, that's negative relation

so, answer is D

Answer:

Option D

Step-by-step explanation:

y = mx + b

b is the y - intercept (when x = 0):

this graph doesn't show any negative values on the axis so options B and C can't be true since it they have - 40 when its positive 40

y = mx + 40

The dot association is going downwards, the y values are getting smaller

making this a negative association leaving on ly option d true

z^2 + 11z+ 28 find the factor of polynomial

Answers

Answer:

(z+7)*(z+4)

Step-by-step explanation:

The first term is,  z2  its coefficient is  1 .

The middle term is,  +11z  its coefficient is  11 .

The last term, "the constant", is  +28

Step-1 : Multiply the coefficient of the first term by the constant   1 • 28 = 28

Step-2 : Find two factors of  28  whose sum equals the coefficient of the middle term, which is   11 .

     -28    +    -1    =    -29

     -14    +    -2    =    -16

     -7    +    -4    =    -11

     -4    +    -7    =    -11

     -2    +    -14    =    -16

     -1    +    -28    =    -29

     1    +    28    =    29

     2    +    14    =    16

     4    +    7    =    11    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  4  and  7

                    z2 + 4z + 7z + 28

Step-4 : Add up the first 2 terms, pulling out like factors :

                   z • (z+4)

             Add up the last 2 terms, pulling out common factors :

                   7 • (z+4)

Step-5 : Add up the four terms of step 4 :

                   (z+7)  •  (z+4)

            Which is the desired factorization

(Look at photo)

54. Given that P is a positive number, N is a negative
number, and | P | > | N |, which of the following
expressions has the greatest value?

Answers

Answer: Choice G   [tex]\left| \frac{p-n}{n} \right|[/tex]

============================================================

Explanation:

Pick a positive number for p, and a negative value for n. Make sure that p is further away from 0 than n is (so that [tex]|p| > |n|[/tex] is a true statement).

I'll go for these values

p = 5n = -2

Replace every copy of p with 5, and replace every copy of n with -2. Then evaluate or simplify. Use your calculator if needed.

Let's start with choice F.

[tex]F = \left| \frac{p-n}{p} \right|\\\\F = \left| \frac{5-(-2)}{5} \right|\\\\F = \left| \frac{5+2}{5} \right|\\\\F = \left| \frac{7}{5} \right|\\\\F = \left| 1.4 \right|\\\\F = 1.4\\\\[/tex]

Now onto choice G

[tex]G = \left| \frac{p-n}{n} \right|\\\\G = \left| \frac{5-(-2)}{-2} \right|\\\\G = \left| \frac{5+2}{-2} \right|\\\\G = \left| \frac{7}{-2} \right|\\\\G = \left| -3.5 \right|\\\\G = 3.5\\\\[/tex]

Next up is evaluating the expression for choice H.

[tex]H = \left| \frac{p+n}{p-n} \right|\\\\H = \left| \frac{5+(-2)}{5-(-2)} \right|\\\\H = \left| \frac{5-2}{5+2} \right|\\\\H = \left| \frac{3}{7} \right|\\\\H \approx \left| 0.4286\right|\\\\H \approx 0.4286\\\\[/tex]

Then let's compute expression J.

[tex]J = \left| \frac{p+n}{p} \right|\\\\J = \left| \frac{5+(-2)}{5} \right|\\\\J = \left| \frac{5-2}{5} \right|\\\\J = \left| \frac{3}{5} \right|\\\\J = \left| 0.6 \right|\\\\J = 0.6\\\\[/tex]

Lastly, compute expression K.

[tex]K = \left| \frac{p+n}{n} \right|\\\\K = \left| \frac{5+(-2)}{-2} \right|\\\\K = \left| \frac{5-2}{-2} \right|\\\\K = \left| \frac{3}{-2} \right|\\\\K = \left| -1.5 \right|\\\\K = 1.5\\\\[/tex]

-----------------------------------

To summarize, when plugging p = 5 and n = -2 into each expression, we got these results:

F = 1.4G = 3.5H = 0.4286 (approximate)J = 0.6K = 1.5

Expression G leads to the largest output.

Therefore, [tex]\left| \frac{p-n}{n} \right|[/tex] has the largest value when p > 0 and n < 0.

The expression |(p-n)/n| has the greatest value. Therefore, option G is the correct answer.

What is an expression?

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Given that, p is a positive number, n is a negative number, and |p| > |n|.

Let us consider p=5 and n=-2

Now,

F) |(p-n)/p|

= |(5-(-2))/5|

= |7/5|

= 1.4

G) |(p-n)/n|

= |(5-(-2))/(-2)|

= |7/(-2)|

= 3.5

H) |(p+n)/(p-n)|

= |(5-2)/(5-(-2))|

= |3/7|

= 0.43

J) |(p+n)/p|

= |(5-2)/5|

= |3/5|

= 0.6

K) |(p+n)/n|

= |(5-2)/2|

= |3/2|

= 1.5

The expression |(p-n)/n| has the greatest value. Therefore, option G is the correct answer.

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HELPPPPPPP!!!!!!!!!!!!!

Answers

Answer:

[tex]b^{2} \sqrt{30b}[/tex]

Step-by-step explanation:

Find the value of X.

Answers

Answer:

x=2

Step-by-step explanation:

[tex]2^{3x+1}+52=180^o[/tex]

[tex]2^{3x+1}+52-52=180-52[/tex]

[tex]2^{3x+1}=128[/tex]

[tex]3x+1=7[/tex]

[tex]x=2[/tex]

HELP. HOW DO I SOLVE THIS?

Answers

The margin error is 2.82%.

What is Margin of Error?

A margin of error is a statistical measurement that accounts for the difference between actual and projected results in a random survey sample

The margin of error for a sample proportion is given by

[tex]z_{\alpha /2}\sqrt{ \frac{p(1-p)}{n} }[/tex]

where p is the sample proportion and n is the sample size.

Consider the  confidence level of 95%, then  [tex]z_{\alpha /2}[/tex] = 1.96

p = 53% = 0.53 and n =1200

Thus, Margin of error=

[tex]z_{\alpha /2}\sqrt{ \frac{p(1-p)}{n} }[/tex]

=1.96[tex]\sqrt{ \frac{0.53(1-0.53)}{1200} }[/tex]

=1.96*0.0144

=0.0282

= 2.82%

Hence, margin error is  2.82%.

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[tex]\sf How \; do \; you\; solve\; this?[/tex]
[tex]\bf 9\left(2x+1\right)=\:9x-18[/tex]

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

[tex] \textbf{Here we go :} [/tex]

[tex]\qquad \sf  \dashrightarrow \:9(2x + 1) = 9x - 18[/tex]

[tex]\qquad \sf  \dashrightarrow \:18x + 9 = 9x - 18[/tex]

[tex]\qquad \sf  \dashrightarrow \:18x - 9x = - 18 - 9[/tex]

[tex]\qquad \sf  \dashrightarrow \:9x = - 27[/tex]

[tex]\qquad \sf  \dashrightarrow \:x = - 27 \div 9[/tex]

[tex]\qquad \sf  \dashrightarrow \:x = - 3[/tex]

[tex] \textsf{Hence, value of x is -3} [/tex]

9(2x+1)=9x-18
•Apply the Distributive Property
18x+9=9x-18
•Rearrange variables the the left side of the equation
18x-9x=-18-9
•Combine like terms
9x=-18-9
•Calculate the sum or difference
9x=-27
•Divide both sides
x= -27/-9
•Cross out the common factor

x=-3

Which math sentence can be used to determine if this triangle is a right triangle? A triangle has side lengths 12, 15, 18. 12 + 15 = 18 12 squared + 15 squared = 18 squared 12 + 18 = 15 12 squared + 18 squared = 15 squared

Answers

Answer:

12^2 + 15^2 = 18^2

Step-by-step explanation:

If we have 3 sides of a triangle we can use the Pythagorean theorem to determine if the triangle is a right triangle

a^2 + b^2 = c^2

12^2 + 15^2 = 18^2

If this is true, then the triangle is a right triangle

Answer:

b

Step-by-step explanation:

pema bedroom is 8 foot long and 14 feet wide

Answers

Answer: Area = 112 Perimeter = 44

Step-by-step explanation:

Area = length × width = 8× 14 = 112

Perimeter = 2L + 2B = (2×8) +(2×14)

Perimeter = 16 + 28 = 44

If superheroes were to fly 300 miles with one will get there first.

Superhero A: 4 miles in 4 minutes

Superhero B: 7 miles in 2 minutes

Superhero C: 2 miles in 2 minutes

Answers

Answer:

Superhero B

Step-by-step explanation:

7 miles in 2 minutes is much farther than 1 mile A minute

F
F
A
B
units
G is the centroid of triangle ABC.
What is the value of x?
What is the length of segment DG?
What is the length of segment AG?
What is the length of segment AD?
x + 2
units
units
X-15
G
G
D
E
C
с

Answers

Answer:

x = 37DG = 22AG = 44AD = 66

Step-by-step explanation:

We presume your "centroid ratio theorem" tells you that AG = 2·DG, so ...

 (x+7) = 2(x -15)

 x + 7 = 2x - 30 . . . . eliminate parentheses

 37 = x  . . . . . . . . . . .add 30-x

Then AG = 37+7 = 44

and DG = 37-15 = 22.

Thus, AD = AG +GD = 44 +22 = 66

I need help finding the unknown measures and equations pls.

Answers

Answer:

Step-by-step explanation:

10x + 8x = 180 (angles on straight line)

x = 10

AFH = 10x = 100

AFE = 8x = 80

Find the value of of the thing-
[tex]5(x+4)=40[/tex]

Answers

[tex]~~~~~~5(x+4) = 40\\\\\implies x +4 = \dfrac{40} 5\\\\\implies x +4 = 8\\\\\implies x= 8-4\\\\\implies x = 4[/tex]

Help me please thank you.

Answers

1. Area of a triangle= 1/2×base.height

=1/2.14.10

=70

2. Area of a trapezium=(base 1+base 2/2)×height

= (3+7/2)×4

=20

1.Mary has ( 20xy - 10x²) sweets. She wants to divide the sweets equally among her (5x) friends.

if X=6 and Y=4, how many sweets:
how many friends does Mary have?​

Answers

Answer:

Mary has 120 sweets and 30 friend.

Step-by-step explanation:

if x = 6 and y = 4

then

20xy - 10x² = 20×(6)×(4)-10×(6^2) = 120

Therefore,

Mary has 120 sweets

……………………………………

if x = 6 and y = 4

then

5x = 5 × (6) = 30

…………………………

120 ÷ 30 = 4

Then 4 sweets per friend.

Write a function rule for “The output is three less than the input x.”

Answers

Answer:

y=x-3

Step-by-step explanation:

PLEASE HELP !!!!!!!!!

Answers

Answer:

17,17,17,0.6 805-774-0842 38.05-1.06.52-2.06 1.46-2.56l8.5-4.5c1.34 98.0.4758.101

Step-by-step explanation:

thanks For Answering For My Subscribe

Find the area of the regular polygon

Answers

Answer:

162m²

Step-by-step explanation:

distance from corner to center = 1/2 of the diagonal

all sides are equal, and this has 4 sides, so it is a square

9m = 1/2 of diagonal

multiply both sides by 2 to isolate the diagonal

18m = diagonal

area of square = length²

length * √2 = diagonal

given the diagonal, we can find the length and then the area

length * √2 = diagonal

divide both sides by √2 to find the length

18m/√2 = length ≈12.7

square the length to find the area

area = 162 m²

write down the first five terms of the following sequences. a) start at 26 and subract 3. b)start at -3 and add 10.

Answers

Answer:

26, 23, 20, 17, 14, 11
-3, 7, 17,27,37,47

Step-by-step explanation:

sequence add and subject

HELP ME OMG PLEASEEEEEEEEEEEEE

Answers

Volume of rectangular pyramid:

[tex]v = \frac{lwh}{3} [/tex]

[tex]v = \frac{12 \times 10 \times 3}{3} [/tex]

[tex]v = 120 \: {ft}^{3} [/tex]

Volume of the rectangular prism:

[tex]v = lwh[/tex]

[tex]v = 12 \times 10 \times 7[/tex]

[tex]v = 840 \: {ft}^{3} [/tex]

Total volume:

[tex]v = 120 + 840[/tex]

[tex]v = 960 \: {ft}^{3} [/tex]

pyramid:

lwh/2

=12×10×3/3

=120 ft^3

prism:

whl

=12×10×7

=840 ft^3

all together:

=960 ft^3

A taiga biome is DIFFERENT from a tundra biome because it has
D

Answers

taiga biome has more vegetation while tundra is just ice

If the interest on Rs. 100 be Rs. 6.25p. what is the interest on Rs. 320?​

Answers

6.25 / 100 = 0.0625 ( interest rate)

320 x 0.0625 = 20


answer: 20

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