Please help me with these, provide me with explanations too

Activity 1: Is It Zee or Tee? Directions: Write the letter "z" if the statement is a characteristic of standard normal distribution and "t" if the given characteristic describes t- distribution. 1. It is best applied if you have a limited sample size (n 30). Follow-up Questions: 1. In the items above, how did you differentiate the statements describing standard normal distribution from those involving t- distribution? 2. Were you able to answer them easily? If not, which item/s did you find difficult to answer? 3. Were you able to differentiate the statements characterizing normal distribution from those describing t-distribution