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
Arte-miy333 [17]
3 years ago
10

The reaction times for a random sample of 9 subjects to a stimulant were recorded as 2.5, 3.6, 3.1, 4.3, 2.9. 2.3, 2.6, 4.1, and

3.4 seconds. Calculate (a) the mean; (b) the median. 8.4 The number of
Mathematics
1 answer:
Helen [10]3 years ago
6 0

Answer:

Mean is 3.2

Median is 3.1

Step-by-step explanation:

a) mean

= (2.5+3.6+3.1+4.3+2.9+2.3+2.6+4.1+3.4)/9

= 28.8/9

= 3.2

b) median: we will arrange in ascending order and pick the middle term.

2.3 2.5 2.6 2.9 3.1 3.4 3.6 4.1 4.3

From the above order, 3.1 is the middle term and is the median

You might be interested in
In triangle ACE, P is the centroid, PF = 6 , and AD = 15 15. Find the measures of PC and AP. Enter your answers as numbers.
xxTIMURxx [149]

Answer:

PC = 12 units

AP = 10 units

Step-by-step explanation:

  • The centroid of a triangle is the intersection of the three medians of the triangle
  • Each median connecting a vertex with the midpoint of the opposite side
  • The centroid divides each median into two parts, which are always in the ratio 2: 1 from the vertex

In ΔACE

∵ P is the centroid of it

∴ P divides CF the ratio 2: 1 from C

∴ PC = 2 PF

∵ PF = 6 units

∴ PC = 2(6)

∴ PC = 12 units

∵ P divides AD at the ratio 2: 1 from A

→ That means AD = 2 + 1 = 3 parts, and AP = \frac{2}{3} AD

∴ AP = \frac{2}{3} AD

∵ AD = 15 units

∴ AP = AP = \frac{2}{3} (15)

∴ AP = 10 units

5 0
2 years ago
Select all equations that have at least one integer solution.
Anit [1.1K]

Answer:

b and d

Step-by-step explanation:

5 0
2 years ago
Prove that 3:8 is equivalent to 12:32
Rama09 [41]
 3:8 is equivalent to 12:32 multiplying by 3 to 12 is 4, so you multiply each number to 4. 3 x 4 = 12 8 x 4 = 32 yes 3:8 is equal to 12:32.
6 0
3 years ago
Read 2 more answers
ABCD and EFII GĦ. Use the figure above to find the value of each angle.
Marta_Voda [28]

Hope these help but i wrote all of it out with all its geometrical reasons

5 0
1 year ago
You are analyzing the survey results tabulated below. The first survey question (yes/no) is whether the respondent is over 40, a
kolbaska11 [484]

Answer:

Step-by-step explanation:

tryin to cheat in workkeys

5 0
3 years ago
Other questions:
  • A group consists of 7 men and 5 women. Three people are selected to attend a conference.
    8·1 answer
  • Assume a class has 19 members
    15·1 answer
  • 3x=2x+5<br> What is the value of x?
    12·2 answers
  • in a class, 60% of the students are girls. there are 19 girls in the class. how many students are there? how many boys are there
    9·1 answer
  • The owner of a small store buys coats for ​$55.00 each. Answer parts a and b. a. He sells the coats for ​$77.00 each. What perce
    6·1 answer
  • A farmer finds that if she plants 75 trees per acre, each tree will yield 20 bushels of fruit. she estimates that for each addit
    15·1 answer
  • What is 5.75 in fraction form?
    15·1 answer
  • Solve 6x-2 4x+ 13 for x.<br>15/2<br>1/2<br>3/12​
    6·1 answer
  • Please try to help thanks
    11·1 answer
  • What is the exact value of 3.2²÷1.6-(3-8)?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!