Answer Happy

3. A sample of 200 students is selected randomly on a large university campus. They're asked if they use a laptop, tablet or other electronic device in class to take notes. Suppose that based on the survey, 70 of the 200 students responded "yes." a. What is the value of the sample proportion, p? b. What is the standard error of the sample proportion? c. Construct an approximate 95% confidence interval for the true proportion p by taking +2 SEs from the sample proportion. LOO Note: For this question (Question 3), part a is asking you for the estimate, not the estimator (so really it should be p). 5. From a survey of 200 co-workers, you find that 48% have already received this year's flu vaccine. An approximate 95% confidence interval is (0.409, 0.551). Which of the following are true? If not, explain briefly. a. 95% of the co-workers fall in the interval (0.409, 0.551). b. We're 95% confident that the proportion of co-workers who have received this year's flu vaccine is between 40.9% and 55.1%. c. There's a 95% chance that a random selected co-worker has received the vaccine. d. There's a 48% chance that a random selected co-worker has received the vaccine. e. We're 95% confident that between 40.9% and 55.1% of the samples will have a proportion near 48%. LO 0,