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
julia-pushkina [17]
3 years ago
8

(Brainliest Award) Suppose a sample of 225 was taken from a population with a standard deviation of 75 feet. In this case, the s

ample mean will be within 10 feet of the population mean 99.7% of the time.
A: True
B: False
Mathematics
2 answers:
strojnjashka [21]3 years ago
7 0
False!!
   Hope This Helped!

Sedbober [7]3 years ago
6 0

Answer with explanation:

Sample Population = 225

Standard Deviation =75 feet

We have to check , whether , the sample mean, will be within 10 feet of the population mean, 99.7%=0.997 of the time.

Z_{0.997}=0.83891

Z_{0.997}=\frac{\bar X-\mu}{\sigma}\\\\0.83891=\frac{225 -\mu}{75}\\\\75 \times 0.83891=225 - \mu\\\\ \mu=225 - 62.92\\\\ \mu=162.08

Sample Mean =162 feet (Approx)

Assuming sample sample size is 2 times of sample Population.That is from ,450 , Sample of 250 is chosen.

Since, within three standard deviation ,from mean on both sides, the whole Population lies.

So, population Mean=225

Difference between Population mean and Sample Mean

→225 - 162= 63

Therefore, the Sample mean and population mean does not differ by a value of 10.

→Sample mean does not lie, within 10 feet of the population mean.  

⇒The given statement is" false",which is ,the sample mean will be within 10 feet of the population mean 99.7% of the time.

 

You might be interested in
HELPPP FOR 25 POINTS
MrRa [10]

Answer:

X/15 = 32/20

x = 24 ft

Step-by-step explanation:

X/15 = 32/20

x = 24 ft

4 0
3 years ago
What is the measure of AC ?<br><br> Enter your answer in the box.<br><br><br> °
irakobra [83]

Solution:

we are given that

Inscribed angle=(2.5x+4)

Intercepted arc=(7x-2)

As we know that the Inscribed angle is Half of the measure of the intercepted arc.

So we can write

(2.5x+4)=\frac{1}{2}(7x-2) \\\\7x-2=2(2.5x+4)\\\\7x-2=5x+8\\\\7x-5x=8+2\\\\2x=10\\\\x=5\\\\\text{So Measure of arc AC}=(7x-2)=7*5-2=35-2=33

4 0
3 years ago
Read 2 more answers
.....................​
Ivahew [28]

1.) Parallelogram

2.) Quadrilateral

3.) Complimentary

4.) bisect

5.) Supplementary

6.) GH = 14 units

7.) 80°

8.) KF = 10

7 0
2 years ago
Four bags of puppies show dog food weight 142 pounds what is the weight in one pound of one bag of the puppy chow dog food
MariettaO [177]

Answer:

I think youre trying to ask the weight of one of the bags

Step-by-step explanation:

the answer is 35.5 you take the total weight and divide it by the number of bags hope this helps

4 0
2 years ago
52% of what number of 109
nikitadnepr [17]

Answer:

209.615384

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Edgar Anderson earns 300 a week plus a 15% commission only on sales he makes after his first 1,000 in sales. If me. Anderson’s s
    7·1 answer
  • What is the value of x in the drawings if we know the triangles are similar?
    5·2 answers
  • What's one hundred sixty times thirtyone
    12·1 answer
  • How does multiplying powers with the same base from multiplying powers with the same exponent but different bases
    6·2 answers
  • Determine whether the statement is true or false. If it is​ false, rewrite it as a true statement. A sampling distribution is no
    14·1 answer
  • For problem (1) and (2), use Gauss-Jordan reduction to transform the augmented matrix of each system to RREF. Use it to discuss
    13·1 answer
  • I need help with this math question real quick
    9·2 answers
  • A man mixed 2 teaspoons of sugar into his large coffee but then added one more teaspoon of sugar because it was not sweet enough
    10·1 answer
  • What’s the value of X?
    15·1 answer
  • What is the answer to the question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!