Rework Exercise 16.25 using the normal approximation to the distribution of the test statistic.
In exercise
The following are the numbers of minutes it took random samples of 15 men and 12 women to complete a written test given for the renewal of their driver€™s licenses:

Use the U test based on Table XI at the 0.05 level of significance to decide whether to accept the null hypothesis µ1 = µ2 or the alternative hypothesis µ1 ‰  µ2, where µ1 and µ2 are the average amounts of time it takes men and women to complete the test.

Men: 9.9,7.4, 8.9,9.1,7.7,9.7,11.8,9.2, 10.0, 10.2 9.5, 108, 8.0, 11.0, 7.5 Women: 8.6,10.9,9.8, 10.7,9.4. 10.3, 7.3, 115, 7.6, 9.3, 88,9.6