Hello, I need help withStatistics and Probability. I have attached .doc file here.

Question 1 Background : Bachelor's Degree Education Rate Education Rate - According to the Department of Education, 32% of adults over the age of 25 in the United States have earned at least a bachelor's degree. Suppose this is the true proportion of all adults over the age of 25 that have earned at least a bachelor's degree. A random sample of 200 adults over the age of 25 will be selected and their highest degree will be recorded. Let pp represent the proportion of adults over the age of 25 in the sample who have earned at least a bachelor's degree. Question 1 Subquestions Consider all the possible values for the resulting sample proportion pp. What is the expected value (or average) of all such values of pp ? 32 64 0.32 unknown since we have not yet taken an actual random sample yet Consider all the possible values for the resulting sample proportion pp. What is the standard deviation of all such values of pp ? 0.001088 0.03298 6.596969 unknown since we have not yet taken an actual random sample yet Perform the check regarding the sample size that confirms the sampling distribution of the possible values for pp will be approximately normally distributed. Question 2 Background : Estimating Proportion of Coffee Drinkers In a recent survey of 150 students at a community college, 86 students said they were \"regular\" coffee drinkers. Based on these results, the 95% confidence interval to estimate the population proportion of all such college students who drink coffee regularly was found to be: 0.573 0.079 or 0.494 to 0.652. Which of the following correspond to the value of 0.573? the sample proportion the population proportion the margin of error the confidence level Which of the following correspond to the value of 0.079? the sample proportion the population proportion the margin of error the confidence level Based on this reported confidence interval, does there appear to be significant evidence (at a 95% confidence level) to conclude there is a majority of regular coffee drinkers in the community college population? Select the answer with the appropriate explanation. Yes, because 57.3% is above 50%. Yes, because 95% is above 50%. No, because the interval of reasonable values dips below 50%. No, because 0.079 is below 50%. Question 3 Background : In-State University? Based on a random sample of 1,250 college students, a 95% confidence interval for the population proportion of all college students who attend an in-state university was reported as 66% to 72%. Determine whether each of the following statements is an appropriate statement that could be included in the report summarizing these results. With 95% confidence we estimate the population proportion of all college students who attend an instate university is between 0.66 and 0.72. Appropriate Not Appropriate There is a 95% chance that the population proportion of all college students who attend an in-state university is between 0.66 and 0.72. Appropriate Not appropriate If this survey were replicated many times, each replication providing a 95% confidence interval for the population proportion of all college students who attend an in-state university, then 95% of the resulting confidence intervals would be expected to capture the sample proportion of college students who attend an in-state university. Appropriate Not appropriate We would estimate that 69% of all college students attend an in-state university with a 95% margin of error of 3%. Appropriate Not appropriate Question 4 : Who needs more? Estimating a Population Proportion. Suppose two researchers want to make a conservative confidence interval to estimate the proportion of American college students who favor abolishing the penny. They both want to have about the same margin of error to estimate this proportion. However, Researcher 1 wants to estimate with 99% confidence and Researcher 2 wants to estimate with 95% confidence. Which researcher would need more students for their study in order to obtain the desired margin of error? Select your answer from the following options. Question 4 Multiple Choice Options Researcher 1. Researcher 2. Both researchers would need the same number of subjects. It is impossible to obtain the same margin of error with the two different confidence levels. Question 5 Background : Plastic or Paper? Consider the following quote: \"In a recent survey, 61% of the sampled consumers said they prefer recyclable plastic grocery bags (rather than paper). If there were no preference (that is, if the true proportion of all consumers who prefer recyclable plastic (over paper) bags is 0.50), the chance of observing the result of 61% or something even larger would be only about 0.03. Because 0.03 is less than 0.05, we can conclude a statistically significant preference for recyclable plastic bags.\" For this study, the p-value of the test is: 0.03 0.05 0.61 For this study, the significance level of the test is: 0.03 0.05 0.61 Which of the following phrases is appropriate for the value of 0.61? Select all that apply. the sample proportion the population proportion a statistic a parameter Which of the following represent the hypotheses being tested in this study? H0: p = 0.61 versus Ha: p 0.61 H0: p = 0.61 versus Ha: p 0.50