Have you ever been in the middle of telling a story and had to use hand gestures or even a drawing to make your point? In algebra, if we want to illustrate or visualize a key feature of a function, we sometimes have to write the function in a different form—such as a table, graph, or equation—to determine the specific key feature we’re looking for. Think about your interactions with others and situations you’ve come across in your own life. How have you had to adjust or change the way you represented something based on either the concept you were trying to describe or the person you were interacting with?

The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u.s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.