This is a practice question and wanting to compare results with another, could you give me your findings that I might compare, thank you!
A researcher gives a group of participants (n = 15) a memory technique to use. He finds that they remember on average twenty words (sample standard deviation = 3) while the average number of words remembered in the population is 15.
a. What is the null hypothesis?
b. What is the research hypothesis?
c. Is this a one or two tailed hypothesis?
d. Which test should you use? Why?
e. Calculate the appropriate statistical test.
f. What is the critical value for α = .05?
g. What do you conclude?