The safety director of an insurance company took samples at random from his minor accidents file and classified them according to the time the accident took place. Time Number of Accidents
8 - 9 am 6
9 - 10 am 6
10 - 11 am 20
11 - 12 noon 8
1 - 2 pm 7
2 - 3 pm 8
3 - 4 pm 19
4 - 5 pm 6
Using the chi-square test and the .01 level of significance, determine whether or not the accidents are evenly distributed throughout the day.
a) What are the Null and Alternate Hypotheses?
b) What is the critical value?
c) What is the Decision Rule?
d) What is the test statistic?
e) What is the decision?
f) What does the decision infer?