Name two different situations that can result in a confidence interval for a proportion falling into negative numbers for some of its values (which does not make sense). Give an example of each.
Q. 2Give an example of a confidence interval for a proportion with a margin of error of 5 that falls below zero for some of its values.
Q. 3A(n) _______________ is an interval of values computed from the sample data that is almost sure to cover the true population number.
Fill in the blank(s) with correct word
Q. 4In practice, statistical methods are used in situations where a sample is taken, and that sample is used to make an inference, or __________, about the population from which it was taken.
Fill in the blank(s) with correct word
Q. 5How does a 90 confidence interval compare to a 95 confidence interval?
a. Fewer of the samples will result in intervals that contain the true population value in the 90 case.
b. Fewer of the samples will result in incorrect intervals in the 90 case.
c. With the 90 confidence interval you are less willing to take a chance on missing the true value.
d. All of the above.
Q. 6Which of the following statements is false?
a. Confidence intervals are always close to their true population values.
b. Confidence intervals vary from one sample to the next.
c. The key to constructing confidence intervals is to understand what kind of dissimilarity we should expect to see in various samples from the same population.
d. None of the above statements are false.
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