The Myers Summer Casual Furniture Store tells customers that a special order will take six weeks (42 days). During recent months, the owner has received several complaints that the special orders are taking longer than 42 days. A sample of 12 special orders delivered in the last month showed that the mean waiting time was 51 days, with a standard deviation of 8 days. At the 0.05 significance level, are customers waiting an average of more than 42 days? Estimate the p-value.