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
djverab [1.8K]
3 years ago
15

The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

Mathematics
1 answer:
blsea [12.9K]3 years ago
7 0

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}

  =\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182

Compute the standard deviation as follows:

SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}

      =\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899

Thus, the standard deviation of the age distribution is 6.2899 years.

You might be interested in
Can i plz get some help with this!<br>its about finding the conjecture<br>​
Studentka2010 [4]

Answer:

3-they are cubes of consecutive natural numbers

1 cube is 1

2 cube is 8

3 cube is 27

and so on...

let me know if you're asking fourth one or third one

6 0
3 years ago
What is the missing side length of the right triangle ? 8in and 15in
arsen [322]

Answer:

67

Step-by-step explanation:

6 0
3 years ago
Here is a centimetre square grid.<br> Draw a shape with an area of 11cm squared.
aksik [14]

Hi

Answer in photo

NOTE: I'm not sure the answer may not be true

Good Luck

#Turkey

6 0
3 years ago
Read 2 more answers
If 2 variables have a negative correlation, then the slope of the line of best fit will be ______.
Lana71 [14]
Negative, because Correlation and slope have the same direction (Sxy will be negative)
5 0
3 years ago
Mark’s food for lunch cost $12. The restaurant added a 5 percent sales tax, $0.60, to the bill. Mark wants to pay a 20 percent t
kotykmax [81]

12+.60+ 12.60

12.60*20%

12.60*.20= 2.52

Tip should be around $2.52

Hope this helped :)

7 0
3 years ago
Read 2 more answers
Other questions:
  • A person invested $7,200 in an account growing rate allowing money to double every 8 years. How much money would be in the accou
    5·1 answer
  • Circle o has a circumference of 36 Pi centimeters what is the length of the radius r​
    13·1 answer
  • at an amusement park, Robin bought a t-shirt for $8 and 5 ticket for ride. she spent a total of $23. How much did each ticket co
    5·2 answers
  • A jacket costs $45. The sales tax on the jacket is 6%. Julia has $48.
    14·1 answer
  • What is 1/4 of 10 explain
    8·1 answer
  • In a particular class of 24 students, 14 are men. what fraction of the students in the class are men
    8·2 answers
  • Elam can wire a light in 40
    14·2 answers
  • Can you help me please​
    8·1 answer
  • The cost of renting Party Palace is $ 120 plus $ 15 per person attending the party. If the total cost of renting Party Palace is
    15·1 answer
  • Use completing the square to solve for x in the equation (x-12)(x+4)= 9.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!