What is the distance from point A to point D on the number line?
1 answer:
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Simple....
using the formula
to find slope....
1.) (9,2)(4,3)
(No)
2.) (9,2)(3,4)
(No)
3.) (2,9)(3,4)
(No)
4.) (2,9)(4,3)
(YES!)
Thus, your answer.
using the formula
1.) (9,2)(4,3)
2.) (9,2)(3,4)
3.) (2,9)(3,4)
4.) (2,9)(4,3)
Thus, your answer.
Answer:
The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).