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
Fittoniya [83]
3 years ago
13

Plz help with my math

Mathematics
1 answer:
Alex787 [66]3 years ago
3 0

Answer:

20

Step-by-step explanation:

You might be interested in
The formula for the standard deviation of a sample is:
timofeeve [1]

Answer:

d. The variance is 9.56 and the standard deviation is 3.09.

Step-by-step explanation:

From the above question, we are given the following data set.

3, 7, 8, 8, 8, 9, 10, 10, 13, 14

a) Mean = 3 + 7 + 8 + 8 + 8 + 9 + 10 + 10 + 13 + 14/ 10

= 90/10

= 9

b) Variance

The formula for sample Variance = (Mean - x)²/ n - 1

Mean = 9

n = 10

Sample Variance =

(3 - 9)² + (7 - 9)² + (8 - 9)² + (8 - 9)² + (8 - 9)² + (9 - 9)² + (10 - 9)² + (10 - 9)² + (13 - 9)² + (14 - 9)² / 10 - 1

= 36 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 16 + 25/9

= 86/9

= 9.555555556

≈ Approximately 9.56

Variance = 9.56

Sample Standard deviation = √Sample Variance

= √9.56

= 3.0919249667

≈ Approximately 3.09

5 0
3 years ago
What are some real world examples of an obtuse angle?
lisov135 [29]
A reclined chair or maybe a laptop
8 0
3 years ago
Carmen buys 153 shares of Cawh Consolidated Banks, each of which pays a constant yearly dividend of $7.14. After six years, how
san4es73 [151]
153 x 7.14 = 1092.42
so every year she gets $1092.42
so times that by 6 and the answer is $6554.52
6 0
2 years ago
Read 2 more answers
Compare the values 552,299
Sophie [7]
What number are we going to compare bro?
3 0
3 years ago
Determine the vertex of the relation y = -2x2 - 8x + 1 by partial factoring. Show all of your steps.
lisabon 2012 [21]

1) the vertex of a parable is given for two points, ( -b/2a, -b2-4ac/4a)

2) Now substitute the values in the equation

x = - (-8)/2(-2) = 8/ -4 = -2

y = -(8^2-4(-2)(1)/ 4(-2) = -(64-8) /-8 = 56/8 = 7

v(-2,7)

5 0
3 years ago
Other questions:
  • PLEASE ANSWER QUICKLY...
    5·2 answers
  • Deposit $2,000 in the bank at 10% interest. How many years will it take to double your money?
    5·2 answers
  • The formula to convert °F to °C is C = C equals StartFraction 5 Over 9 EndFraction left-parenthesis F minus 32 right-parenthesis
    6·2 answers
  • How does 19/15 become a a mixed number
    14·2 answers
  • What is the meaning of percent? How can percent be estimated and found?
    13·1 answer
  • Which ordered pair is a solution of y &gt; 5x-2?<br><br> (3,13)<br> (1,5)<br> (2,7)<br> (4,4)
    9·1 answer
  • Si un vendedor gana $ 450 por cada venta de $ 50 000, ¿cuál es su tasa de comisión?​
    11·1 answer
  • The function f (x) = 4(3) can be used to determine the number of
    9·1 answer
  • Julie wants to make 800 g of a 15% alcohol solution by mixing a
    8·1 answer
  • Write a real-world problem to compare fractions.then solve the problem
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!