Please can you help with this problem. Thank you.

Student researchers wanted to see whether a short delay between seeing a list of words and when people were asked to recall them would hinder memorization. The subjects were shown a list of words to memorize for 1 minute and were then given 1 minute to recall as many words as they could. Each subject did this once with no delay between memorizing and recall and another time with a 30- second wait between memorizing and recall. They were randomly assigned the order of the two conditions. The number of words memorized under each condition can be found in the StatCrunch data set MemorizingWords. QUESTIONS: 1. Write the null hypothesis in words and symbols. 2. Write the alternative hypothesis in words and symbols