A survey of randomly selected 8th, 10th and 12th graders from Humboldt County were asked if they used alcohol within the last 30 days. These are the results for those that responded "yes” “8th graders...

A survey of randomly selected 8th, 10th and 12th graders from Humboldt County were asked if they used alcohol within the last 30 days. These are the results for those that responded "yes”
“8th graders - 34%
10th graders -48%
12th graders-68%

We want to know if the use of alcohol is the same for all students or if there is a significant difference.

(c) Assume that the results are based on a simple random sample of 100 students from each grade for a total of 300 students surveyed. Perform the appropriate statistical test and report the test statistic and the p value.
(d) Is the result significant at a 5% decision value? What does this mean in terms of accepting or rejecting the null hypothesis?