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
Elena-2011 [213]
3 years ago
11

A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obta

ined (12 18 19 20 21). A point estimate of the mean is?
Mathematics
1 answer:
Strike441 [17]3 years ago
3 0

Answer:  18

Step-by-step explanation:

  • The<u> sample mean</u> is the best point estimate of the population mean .

Given : A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obtained (12 18 19 20 21).

Then , the sample mean = \dfrac{\text{Sum of observations}}{\text{Number of observations}}

sample mean =\dfrac{12 +18 +19+ 20+ 21}{5}=18

Hence, A point estimate of the mean is 18.

You might be interested in
Help i need to ppooooppp
Daniel [21]

Answer: b

Step-by-step explanation: There was the same question on brainly and they said that the submarine sandwich one was right.

5 0
3 years ago
Write 8.62 in word form.
borishaifa [10]
Eight point six two is the answer
7 0
3 years ago
Read 2 more answers
You plan to construct a brick wall measuring 14.5 ft. in length, 5.5 ft. high, and 0.5 ft. in width. If a brick measures 6 in. x
Licemer1 [7]

Answer: There are 1436 bricks that he will need to make a brick wall.

Step-by-step explanation:

Since we have given that

Dimensions of a brick wall is given by

Length = 14.5 feet

Width = 0.5 feet

Height = 5.5 feet

Dimensions of a brick is given by

Length = 6 inch

Width = 4 inch

Height = 2 inch

We need to find the number of bricks :

So, Number of bricks is given by

\text{ Number of bricks }=\frac{\text{ Volume of brick wall }}{\text{ Volume of brick}}\\\\=\frac{14.5\times 5.5\times 0.5\times 12\times 12\times 12}{6\times 4\times 2}\\\\=1435.5\\\\=1436

Hence, there are 1436 bricks that he will need to make a brick wall.

5 0
3 years ago
Container A has 1600 ml of water and is leaking 12 ml per minute. Container B has 2000 ml and is leaking 20 ml per minute. Let m
a_sh-v [17]

Answer:

Container A i remember this question from years back

Step-by-step explanation:

4 0
3 years ago
A circle has a diameter with endpoints at -2 + i and -6 -11i. What is the center of the circle?
pashok25 [27]

Answer:

- 4 - 5i

Step-by-step explanation:

The centre of the circle is the average of the endpoints

centre = (- 2 + i - 6 - 11i ) ÷ 2

          = (- 8 - 10i ) ÷ 2

         = - 4 - 5i

7 0
2 years ago
Other questions:
  • W 3 =512 what is the answer
    11·1 answer
  • In a group of 15 children the ratio of the boy : the girl is 2: 3: 5 more girls join the group. Calculate the percentage of boys
    15·1 answer
  • Help !!!!! It’s algebra :(
    5·2 answers
  • Lisa can paint a wall in four hours. Sissi needs eight hours to paint the wall. How long will it take if they are helped?
    14·1 answer
  • A new physical therapy is being tested in an experimental setting to see if
    8·1 answer
  • I WILL GIVE YOU A BRILLIANT
    5·2 answers
  • if the recycling club collected 48 aluminum cans 3/4 of the cans was from 6th grade was 1/6 was from 7 grade and the rest was fr
    12·1 answer
  • A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fai
    11·1 answer
  • Find the quotient<br> 960 = 18
    8·2 answers
  • How do you solve the inequality of -11.3 is equal to or greater than -4.7 + 4x​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!