The proportion of customer who rated service as either good or excellent was .65 p=.65 you would like to know if customer satisfation has increased due to the training program.
What are the null and alternative hypotheses?
Your sample of 60 customers gave you a sample proportion of .75 rating service as good or excellent. calculate the test statistic and p value
Using a level of significent a=.01 find the critical value explain whether or not you would accept the null hypothesis using both the critical value approach and the p-value approach and why.