(02.01 LC) Da
The student council at a high school wants to conduct a survey of student opinion.
Council members want to begin with a simple random sample of 160 students. Which
of the following survey methods will produce a simple random sample? (4 points)
Survey the first 160 students to arrive at school in the morning
Number the students on the school roster. Use a table of random numbers to choose 160
students from this roster for the survey.
Survey every 10th student entering the school gym until 160 students are surveyed
Use random numbers to choose 40 each of freshmen, sophomores, juniors, and seniors
Number the gym seats. Use a table of random numbers to choose seats and interview the
students until 160 have been interviewed

The function g(x) is defined as shown. x-1, -2 g(x) = 2x+3, -1 6-x, x23

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution