The average number of accidents at controlled intersections per year is 5.4. Is this average less for intersections with cameras installed? The 57 randomly observed intersections with cameras...

The average number of accidents at controlled intersections per year is 5.4.  Is this average less for intersections with cameras installed? The 57 randomly observed intersections with cameras installed had an average of 5.2 accidents per year and the standard deviation was 0.58. What can be concluded at the  αα = 0.05 level of significance?

1. The null and alternative hypotheses would be:

 H0:H0:     Correct     Correct

 H1:H1:     Correct     Correct

1. The test statistic    Correct = (please show your answer to 3 decimal places.)


2. The p-value =     (Please show youranswer to 4 decimal places.)