A 95% confidence interval for the mean u of a population is computed from a random sample and found to be 9+3. In regards to the confidence level, we may conclude that
A) there is a 95% probability that u is between 6 and 12.
B) 95% of values sampled are between 6 and 12.
C) if we took many, many additional random samples and from each computed a 95% confidence interval for y,
approximately 95% of these intervals would contain u.
D) there is a 95% probability that the true mean is 9 and a 95% chance that the true margin of error is 3.
E) all of the above are true.
А
B
С
D
Ο Ε

nope

step-by-step explanation:

ok

step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

a

step-by-step explanation:

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