Hello I am doing my homework and need help on how to solve this step by step. could you help me ?

A consumer product magazine recently ran a story concerning the increasing prices of digital cameras. The story stated that digital camera prices dipped a couple of years ago, but now are beginning to increase in price because of added features. According to the story, the average price of all digital cameras a couple of years ago was $196.00. A random sample of n = 29 cameras was recently taken and entered into a spreadsheet. It was desired to test to determine if that average price of all digital cameras is now different from $196.00. Find a rejection region appropriate for this test if we are using a = 0.01