One of your distributors reports an average of 150 sales per day. you suspect that this average is not accurate, so you randomly select 35 days and determine the number of sales each day. the sample mean is 143 daily sales with a standard deviation of 15 sales. at ? = 0.01, is there enough evidence to doubt the distributor’s reported average? step 1. state the null and alternate hypothesis. step 2. identify the test as left-tailed, right-tailed or two tailed test. step 3. identify the significant level, ? step 4. determine the critical value(s)step 5. identify the rejection and non-rejection region(s)step 6. compute the test statistic (test value)step 7. make the decisionstep 8. interpret the decision.