NEW
Font size
WorksheetsStats 1.7
Total questions: 8
Worksheet time: 31mins
Given the 95% confidence interval (0.68, 0.79), what is the point estimate?
0.68
0.055
0.028
0.79
0.735
Given the 95% confidence interval (0.68, 0.79), what is the margin of error?
0.68
0.055
0.028
0.79
0.735
A study is used to create a 90% confidence interval for the Presidential approval rating. The resulting interval is (0.48, 0.52). Interpret this interval in context.
We are 90% confident that the true proportion of people who approve of the President’s job performance is between 0.48 and 0.52.
90% of people surveyed will place their proportion of Presidential approval between 0.48 and 0.52.
If we survey 100 people, 50 of them will say they approve of the President’s job performance.
A survey of Presidential approval will always be 90% confident of the true proportion.
For a sample, the 95% confidence interval is (0.202, 0.482).
What is the point estimate, p̂, of this sample?
0.28
0.14
0.342
0.684
For a sample, the 95% confidence interval is (0.202, 0.482).
What is the margin of error of this sample?
0.28
0.14
0.342
0.684
