9. Education: True–False Questions Dr. Gill wants to arrange the answers to a true–false exam in random order. The answers in order of occurrence are shown below.

T T T T F T T F F T T T T F F F F F F T T T T T T Test the sequence for randomness using a 5 0.05.

10. Agriculture: Wheat For the past 16 years, the yields of wheat (in tons) grown on a plot at Rothamsted Experimental Station (England) are shown below.

The sequence is by year.

3.8 1.9 0.6 1.7 2.0 3.5 3.0 1.4 2.7 2.3 2.6 2.1 2.4 2.7 1.8 1.9 Use level of significance 5% to test for randomness about the median.