Answer:
We are confident at 99% that the difference between the two proportions is between 
. And since the confidence interval cotains the value 0 we don't have enough evidence to conclude that we have significant differences between the to proportions in these two cities
Step-by-step explanation:
represent the real population proportion for 1
represent the estimated proportion for 1
is the sample size required for 1
represent the real population proportion for 2
represent the estimated proportion for 2
is the sample size required for 2
represent the critical value for the margin of error
The confidence interval for the difference of two proportions would be given by this formula
For the 99% confidence interval the significance is 
and 
, and the critical value using the normal standard distribution.
Replacing we got:
We are confident at 99% that the difference between the two proportions is between
. And since the confidence interval cotains the value 0 we don't have enough evidence to conclude that we have significant differences between the to proportions in these two cities
Answer:
I'm pretty sure the answer is 2
Step-by-step explanation:
Answer:
2/5
or
0.4
Step-by-step explanation:
Threex=six over five
|
\/
3x = 5/6
6 1 6
_ x _ = __
5 3 15
6/15=2/5
Answer:
Whichever one is only negatives.
Step-by-step explanation:
Whole numbers are integers that are only positive
