A) What are the point estimates? What is the appropriate z-value to use when constructing a confidence interval using a 95 confidence level? Calculate the three confidence intervals. Do this by hand and use Excel.
Quinnipiac University Poll is a leading polling organization. In May 2019, it released a survey conducted from May 16 to May 20, 2019 of 1,078 self-identified registered voters. The poll asked a series of questions about a woman’s right to have a legal abortion. Here is question 47: How about when a pregnancy was caused by rape or incest; do you think abortion should be legal in this situation or not? Here are the percentage of respondents, broken out by political affiliation, who support the right of a woman to have an abortion under these conditions.
|
|
Republican |
Democrat |
Independent |
|
Support |
68% |
92% |
83% |
|
Sample Size, n |
313 |
345 |
323 |
- A) What are the point estimates?
-
What is the appropriate z-value to use when constructing a confidence interval using a 95 confidence level?
-
Calculate the three confidence intervals. Do this by hand and use Excel.
-
What do the confidence intervals you constructed tell you?
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