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
The triangles shown below must be congruent.
Anestetic [448]

Answer:

Yes the triangles are congurant.

Step-by-step explanation:

Because if you can see up and down triangles this means they are congurent.

4 0
3 years ago
The present age of the father is twice the age of his daughter. Ten years ago, the
Elenna [48]

Answer:

<h3>           The father is 40 and the daughter is 20.</h3>

Step-by-step explanation:

x           -  the present age of the daughter

2x         -  the present age of the fathter  

x - 10          -  the age of the daughter ten year ago

2x - 10        -  the age of the fathter ten year ago

Father is older than his dauther, so:

2x - 10 = (x - 10) + 20  

2x - 10 = x - 10 + 20  

2x - 10 = x + 10              {subtract x from both sides}

x - 10 = 10                      {add 10 to both sides}

x = 20

2x = 2·20 = 40

6 0
2 years ago
A car travels at a rate of 45 miles per hour for 5 hours. Let y be the distance, in miles, the car travels for a given amount of
Nuetrik [128]

Answer:

0 ≤ x ≤ 5

Step-by-step explanation:

I used the Desmos calculator

6 0
3 years ago
The area of a rectangle is 30 + 12x. List at least 3 possibilities for the length and width of the rectangle.
Gala2k [10]

Answer:

Below in bold.

Step-by-step explanation:

Area  = 30 + 12x and area is also = to width * length so we need to look for factors of 30 + 12x.

30 + 12x = 6(5 + 2x)

So  6 and 5 + 2x  is one possible answer.

3 and 10 + 4x is another.

12 and 2.5 + x is another.

If we multiply these pairs together we see that the result is

30 + 12x in each case.

6 0
3 years ago
WHY IS STEPHAN WRONG?? PLEASE EXPLAIN WHY AND THE CORRECT ANSWER. was meant to be done 2 months ago
Shtirlitz [24]

Answer:

c

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • A bus travels with a constant speed of 60 miles per hour. How long will it take to travel 75 miles?
    5·1 answer
  • Order the following from Least to Greatest (draw a number line)<br><br> l-6l, -3, 0, -1
    10·1 answer
  • Convert 2.365 to a percent
    11·2 answers
  • Find the quotient 27,006 divided by 42
    5·1 answer
  • Phythagoras was born about 582bc.issac Newton was born in 1643 ad .how many years apart were they born
    15·2 answers
  • For this item, enter the answer in the space provided.
    10·1 answer
  • Which of the following combinations of side lengths will form a triangle with vertices X, Y, and Z?
    11·1 answer
  • 4) 1% of what number is 10?
    9·2 answers
  • Can any of ya check my answer?
    13·1 answer
  • The mean cost of a five pound bag of shrimp is 42 dollars with a variance of 49. If a sample of 54 bags of shrimp is randomly se
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!