An organizational specialist working for a large company was asked to find out if a newly proposed customer relations program would significantly reduce the number of written customer complaints. She implemented the program for a month in several branches. She found that the number of complaints submitted was not significantly lower than the company average of 68 for that month (Z score = -.10; 95% CI, 65-69). What should she report?
1) How should she explain this result to her supervisors if they are unfamiliar with hypothesis testing involving a sample of more than one individual or confidence intervals?