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
adoni [48]
3 years ago
14

From a normally distributed population, a simple random sample of size 30 is taken. The mean of the sample is 144 and the standa

rd deviation of the sample is 12.
Construct a 90% confidence interval for the population mean.

A. (139.7, 148.3)
B. (140.4, 147.6)
C. (142.4, 145.6)
D. (143.3, 144.7)
Mathematics
1 answer:
Oduvanchick [21]3 years ago
8 0

From a normally distributed population, a simple random sample of size 30 is taken. The mean of the sample is 144 and the standard deviation of the sample is 12.

Construct a 90% confidence interval for the population mean.

Solution: B. (140.4, 147.6)

You might be interested in
PLEAZE HELP WILL MARK BRAINLIEST Find the value of x: 24 + 1/2x = 50.
s344n2d4d5 [400]

Answer:

52

Step-by-step explanation:

Subtract 50 on both sides, then divide by .5 to find x

3 0
3 years ago
Read 2 more answers
2^2x+2 *5^x-1=8^x*5^2x
Liula [17]

Answer:

The solution will be "x = 2 and x = -1".

Step-by-step explanation:

The given equation is:

⇒  2^{2x+2}\times 5^{x-1}=8^x\times 5^{2x}

On solving "8^x", we get

⇒  2^{2x+2}\times 5^{x-1}=(2^3)^x\times 5^{2x}

As we know, if the base are same then their powers will be added together.

⇒  2x+2=3x ...(equation 1)

⇒  x-1=2x ...(equation 2)

From equation 1, we get

⇒  2=3x-2x

⇒  2=x \ i.e., x =2

From equation 2, we get

⇒  -1=2x-x

⇒  -1=x \ i.e., x=-1

So that the correct answer will be "x = 2" and "x = -1".

7 0
3 years ago
Cone volume of 288in<br> and height 7 in find base of radius
stepan [7]
The answer would be:

6 0
3 years ago
Which of the following should be considered in buying a computer?
koban [17]

Answer:

All of the following should be considered when buying a computer.

8 0
3 years ago
Read 2 more answers
Gill creates a model prisim using 22 unit cubes. What is the volume of the prisim
Elena L [17]
I think the answer is 66. But I'm not sure just try and see...!
5 0
3 years ago
Other questions:
  • How do you put 8 3/4ft into inches
    13·1 answer
  • If the cost see for manufacturing X units of a certain product is given by C=X squared +25X +40 find the number of units manufac
    5·1 answer
  • 5000 equal how many hundreds
    14·1 answer
  • The least natural number that is divisible by three different primes is
    10·1 answer
  • In this geometric sequence, what is the common ratio ? 104,-52,56,-13
    5·1 answer
  • Pls help me as quick as u can (:
    8·1 answer
  • What is 2 5/16 + 24 1/2
    12·1 answer
  • HELP PLZZZZZ OMGGGGGGG
    11·1 answer
  • Help<br><br><br><br><br><br> plssssssssssssssss
    9·1 answer
  • As used in line 86, "scale" most nearly means
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!