Independent Practice Data and Graphs 6 of 10 6 of 10 Items

Item 6
Mrs. Vega assigned her students a book report about the most recent novel discussed in class. The following dot plot displays the number of pages written by the students in her first-period class.

What percent of Mrs. Vega's class wrote a 4 page book report?

3%3 percent

12%12 percent

30%30 percent

3313%

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.