probability is about .95 that the 95% confidence interval will include the true population parameter. On the other hand, 2.5% of the time the highest value in the confidence interval will be smaller than the true value, while 2.5% of the time the smallest value in the confidence interval will be greater than the true value.
Just remember, low prices sell more quickly. When in doubt, go back to Step 1 and remind yourself WHY you are having a garage sale. Then, proceed with your pricing.Items sold for $1 sell much faster than those sold for $5 or more. For the best results, keep your prices in the $1 to $2 range.
1 Detailing services with a fixed location, like a car wash, may offer free pickup and delivery of the vehicle.  CarsDirect.com offers Do-it-yourself detailing tips . Basic supplies like buckets, cleaners and wax can cost $5-$100 or more, depending on what is needed.