The advantage of using confidence interval can be associated with the population. A well-represented confidence interval of 95% can say that the parameter of the total population has been met. -Muhammad Imdadullah, https://itfeature.com
The disadvantage happens when the interval does not represent the parameter. If the interval is not within and was actually outside of it comes the problem. The interval is still randomly based and does not give the exact response of the population.
https://answers.yahoo.com/question/index?qid=20150930133919AAtj2HV
Answer:
( 2x +3 ) (x-4 )
Step-by-step explanation:
2x²-5x-12
Factor
( 2x ) (x )
We need to look at the factors of -12
-1 *12 -2 *6 -3*4 -4*3 -6*2 -12*1
What multiplies 2 * 1st factor + the other factor to equal -5
2* -4 +3 = -8+3 =5
so the -4 goes on the outside and the 3 goes on the inside
( 2x +3 ) (x-4 )
Answer: A
Solution: To find the mean (average) of a data you add up all the data given and divide it by the amound of seperate data there is i.e there are 4 boys, boy a is 1.3m high, boy b is 1.5m high, boy c is 1.1m high and boy d is 2m high. To find the mean(average) you add up all the data (height) 1.3m + 1.5m + 1.1m + 2m = 5.9m, 5.9 is the total, to find the mean you divide the total by the amount of values (boys), there are 4 boys so you do 5.9/4 = 1.475m, so the mean is 1.475m
Basically All the data (regions) added up is 65,000 and there are five regions (values) so you divide 65,000 by 5 which is 13,000