The students in a statistics class were asked if they could be a good random number generator. Each student was asked to write down a single digit from 0 through 9. The data were collected starting at the front left of the class, moving row by row, to the back right of the class. The sequence of digits were as follows:

Do these data show a randomness about the median value of 4.5 at a = 0.05? Complete this test by using (a) critical values from Table 14 in Appendix B and (b) the standard normal distribution.

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