Question

Generally, the average typing speed is 54 words per minute (wp). A professor wanted to see where his students stand compared to the population. He tested 28 of his students and obtained the following estimates: an average typing speed of 46 with a standard deviation of 18. What can the professor conclude with α = 0.01?

If appropriate, compute the CI. If not appropriate, input "na" for both spaces below.
[  ,  ]

e) Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
d =  ;   ---Select--- na trivial effect small effect medium effect large effect
r² =  ;   ---Select--- na trivial effect small effect medium effect large effect

f) Make an interpretation based on the results.

Student typing speed is significantly higher than average.Student typing speed is significantly lower than average.    Student typing speed did not significantly differ from the average.

Answer 1

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