A random sample of 15 adults living in a small town is selected to estimate the proportion of voters favoring a certain candidate for mayor. Each individual was also asked if he or she was a college graduate. By letting Y and N designate the responses of "yes" and "no" to the education question, the following sequence was obtained. Use the runs test at the 0.1 level of significance to determine if the sequence supports the contention that the sample was selected atrandom.

Transcribed Image Text:

N NN NYYNYYNY A" N NN