1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serjik [45]
3 years ago
9

A random sample of 10 subjects have weights with a standard deviation of 11.6118 kg. What is the variance of their weights? Be s

ure to include the appropriate units with
the result.
The variance of the sample data is_
(Round to four decimal places as needed.)
Mathematics
1 answer:
timofeeve [1]3 years ago
4 0

Answer:

<u>The variance of the sample data is 134.8339 kg²</u>

Step-by-step explanation:

Let's recall that the Standard deviation of a sample or population is the square root of the Variance, therefore:

Standard deviation = √Variance

Standard deviation² = (√Variance)²

Standard deviation² = Variance

Replacing with the value we have:

11.6118 * 11.6118 = Variance

Variance = 134.8339 kg²

<u>The variance of the sample data is 134.8339 kg²</u>

You might be interested in
The capacity of a cylindrical water tank is 539 litres. If its height is 1.4 meter then find the radius of the base.​
natulia [17]

Answer:

350m

Step-by-step explanation:

  • capacity= volume/1000
  • but we know that volume of cylinder is πr²h so substitute it I'm the volume space
  • then substitute for π as 22/7, h as 1.4 , and also capacity as 539
  • 539= ((22/7)×r²×1.4)/1000
  • when you simplify you get r as 350m
6 0
2 years ago
What is 10^-3x*10^x= 1/10
densk [106]
Since 1/10=10^-1, and multiplying exponents with the same base just adds the actual exponents at the top, x=2
3 0
3 years ago
Find the value of each variable in the parallelogram
kompoz [17]

9514 1404 393

Answer:

  k = 7

  m = 8

Step-by-step explanation:

The diagonals bisect each other, so each half is equal to the opposite half.

  k +4 = 11 . . . . down-sloping diagonal

  k = 7

__

  m = 8 . . . . up-sloping diagonal

4 0
3 years ago
Look at the pentagonal numbers. Use finite differences to determine which function represents the pattern.
Ahat [919]

Answer:

f(x) = 1.5x - 0.5x

Step-by-step explanation:

The function of the pattern represented by the pentagonal numbers is the sum of three triangular numbers.

The triangular number general formula

                      x (x + 1) / 2

For  example,

The sequence

1,     3,     6,      10

                                             *

                          *              *  *

         *           *   *          *   *  *

* ,    *  *,     *   *   *,     *   *   *  *

_____________________________

The pentagonal numbers

The sequence:

1, 5, 12, 22, 35

As shown in the picture can be divided into three triangles

Triangle 2

x (x + 1) / 2

Triangle 1 and 3  (they are triangles one unit smaller than 2)

n (n + 1) / 2

n= x-1

Replacing n

(x-1) ((x-1) + 1) / 2

(x-1) (x) / 2

(x-1) x / 2

______________

Function represents the pattern

Triangle 2  + (Triangle 1  +  Triangle 3)

Triangle 1  = Triangle 3

So then,

Triangle 2 + 2* Triangle 1

x (x +1) /2  + 2* (x -1) x/2

Rearranging

0.5 x (x +1) + x(x -1)

0.5x^2 + 0.5x + x^2 -x

(0.5 x^2 + x^2)  + (0.5x -x )

1.5 x^2 - 0.5 x  

______

3 0
3 years ago
Read 2 more answers
Find the length of side BC. Round your answer to the nearest tenth.
Arturiano [62]

Answer:

2.5

Step-by-step explanation:

(6)cos(65)

7 0
2 years ago
Other questions:
  • Alinn flipped a coin 20 times. The coin landed heads up 12 times and tails up 8 times.
    15·1 answer
  • Which equation is graphed here?
    5·2 answers
  • Simplify ; 7a+4b+7a-3b
    13·2 answers
  • 5/8-3/4(8-1/3)+1 what is this
    11·1 answer
  • Derek has 12 shirts in his closet. if 2 out of every 3 of these shirts are striped, how many striped shirts does derek have in h
    8·1 answer
  • Determine the equation of the line given by the graph
    6·1 answer
  • Real life problem for (-10+-2)=12
    11·1 answer
  • Help me ASAP with this problem
    11·1 answer
  • Can you guys help me and answer this math question below please I really need help I'll mark brainliest to whoever answers pleas
    14·1 answer
  • Answer for 25 points :)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!