Suppose you are an educational researcher, and want to investigate the preferences of students for fully asynchronous classes. You survey 305 students, and find that 208 of them prefer asynchronous classes. Using this information, create a 90% confidence interval around the sample proportion What is the lower bound (lower end) of the confidence interval? Round you final answer to three decimal places. Choose the value that is closest to you answer.

Solve the fourth one

What Percent of US Adults Say They Never Exercise?In a survey of 1000 US adults, twenty percent say they never exercise.1Find a 95% confidence interval for the proportion of US adults who say they never exercise.Round your answers to three decimal places.The 95% confidence interval is Enter your answer; The 95% confidence interval, value 1 to Enter your answer; The 95%confidence interval, value 2 .What is the margin of error, with 95% confidence? Round to one decimal place.± _________________ %

You and a friend are interested in knowing if two groups have the same proportion of smokers. The first group of n = 500 consist of 490 smokers. The second group of n = 500 has 400 smokers. The overall proportion of smokers in both groups is .89 (89%). You want to know whether the proportions of smokers are the same in the two groups of individuals. Based on a 95% confidence level, after hypothesis testing, what would you tell your friend? Would the null hypothesis reject H0 or fail to reject H0?