Answer the following questions. This part of the lab has no Excel steps. Be sure to show work to get full credit.

1. A random sample of 50 CSCC students are surveyed to determine what percent of our students are first-generation college students. The results showed that 16 of the students identify as first-generation college students.
   1. What is the sample proportion of first-generation college students at CSCC?

1. Is this an example of a parameter or a statistic? Explain.

1. Identify the sampling method used in each of the following studies:
   1. On an assembly line, every 12^th part is selected and tested for durability.

1. A study looked at 10 animal shelters in Columbus, Ohio. A random sampled of 4 animals from each shelter was taken and the animals were tested for parvovirus.

1. Best Buy prints a survey request on the bottom of all of their receipts for customers to rate their customer service.

1. 100 elementary school children in Delaware County Schools are randomly sampled to determine how much time they spend reading each week.

1. A health organization wants to estimate the population proportion of Ohioans who have received the flu vaccine this year. Before starting this study, they need to know how many Ohioans need to be surveyed to be 99% confident that they are within 4% of the true population proportion. What is the sample size needed for this study?

1. CareerBuilder took a random sample of 1,600 workers and found that 592 of them would put in their two-weeks' notice at work if they won the lottery.

1. Find the sample proportion and standard error for this sample.

1. Does this meet the assumptions and conditions needed to use a confidence interval to estimate the population proportion? Explain.

1. Find the 90% confidence interval for the population proportion. Show work or calculator input.

1. Interpret the 90% confidence interval in context to the problem.