Given the following points: (-2, 0), (-1,0), (0,1), (1, 1) and (2, 3)
What is the critical value necessary to determine a confidence interval for a 95% level of confidence?
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A. B. C. D. E.C
Look at the t tables for n-2 degrees of freedom at the 5% level. Here, we look for a two tailed test with 5-2 = 3 degrees of freedom. This is 3.182.
To determine the critical value necessary to calculate a confidence interval for a 95% level of confidence, we need to consider the distribution of the data. Since the exam question does not specify any particular distribution or provide additional information, we can assume that the data is normally distributed.
For a 95% confidence level, we need to find the critical value associated with an alpha (α) of 0.05. The critical value represents the number of standard deviations away from the mean that corresponds to the desired confidence level.
To find the critical value, we can use a standard normal distribution table (also known as a Z-table) or utilize statistical software.
Given that the question provides a set of points (-2, 0), (-1,0), (0,1), (1, 1), and (2, 3), it is not immediately clear how these points relate to finding the critical value. The data points seem to represent coordinates on a graph, but without further context, we cannot directly use them to calculate the critical value.
Therefore, we cannot determine the critical value based on the information provided in the question. As a result, the correct answer is B. None of these answers.