Which of the following equations has the solution set {0}?
2 answers:
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Answer:
The interval is constructed at 93% confidence.
Step-by-step explanation:
Confidence interval concepts:
A confidence interval has two bounds, a lower bound and an upper bound.
A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.
The margin of error is the difference between these two bounds, divided by 2.
Confidence interval of proportions concepts:
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 .
The margin of error is:
In this problem, we have that:
2050 people, so n = 2050.
Lower bound: 0.878
Upper bound: 0.903
Confidence level:
We have to find z.
has a pvalue of 0.965.
That is:
Finally
The interval is constructed at 93% confidence.
Hope you could understand.
If you have any query, feel free to ask.
Answer:
The first option so is the answer
<u>Skills required: Graphing Knowledge, Systems Knowledge</u>
Step-by-step explanation:
1) The solution to any system is the intersection between any 2 lines or functions. In this case, we are given two functions on a graph, and need to find the solution to them. That is the intersection.
2) We can see the intersection and see that the x-axis value for the coordinate point is around 3 1/2 (or 3.5 -- whatever you prefer), and that the y-axis value for the point is -4.
Therefore, the coordinate point is: since this answer best matches the coordinate values of that point.
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Select the first option, have a nice day! :D