A researcher is interested in estimating the proportion of voters who favor a tax on e-commerce. Based on a sample of 250 people, she obtains the following 99 confidence interval for the population proportion p:
0.113 < p < 0.
171
Which of the statements below is a valid interpretation of this confidence interval?
A) If many different samples of size 250 were selected and, based on each sample, a confidence interval were constructed, 99 of the time the true value of p would lie between 0.113 and 0.171
B) If 100 different samples of size 250 were selected and, based on each sample, a confidence interval were constructed, exactly 99 of these confidence intervals would contain the true value of p.
C) If many different samples of size 250 were selected and, based on each sample, a confidence interval were constructed, in the long run 99 of the confidence intervals would contain the true value of p.
D) There is a 99 chance that the true value of p lies between 0.113 and 0.171
Question 2
z = -2 and z = -0.7
A) 0.0228 B) 0.758 C) 0.2192 D) 0.242
Lake position in the landscape and proportion of water received as groundwater (data from Webster et
Estimating the molecular weight of a protein
Proportion of Women and Men in the U.S. Labor Force
The Inverted Income Pyramid: The Proportion of Income Received by Each Fifth of the U.S. Population
What’s a Serving? Eat with Your Hands! Your hands can guide you in estimating portion sizes
After elections were held, it was desired to estimate the proportion of voters who regretted ...