course Phy 231
I had the correct standard deviations, I just copied the mean deviation instead of the mean of the times.
testing hypothesis time intervals
Your work has been received. Please scroll through the document to see any inserted notes (inserted at the appropriate place in the document, in boldface) and a note at the end. The note at the end of the file will confirm that the file has been reviewed; be sure to read that note. If there is no note at the end, notify the instructor through the Submit Work form, and include the date of the posting to your access page.
Your 'testing hypothesis time intervals' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your initial comment: **
** Your first hypothesis. **
I think that my index finger will be slightly faster because it's smaller and less awkward to click the mouse with a finger than a fist.
** 10 quick time intervals using the index finger of your dominant hand **
.1523438
.1601563
.1523438
.1523438
.1523438
.140625
.1523438
.1601563
.1601563
.1445313
** 10 quick time intervals using the fist of your non-dominant hand **
.1367188
.1679688
.1171875
.1289063
.1289063
.1289063
.1171875
.1289063
.1445313
.1289063
** Your means and standard deviations: **
0.004453, 0.006497
0.01016, 0.01473
$#
Corrected Means and Deviations
.1527, 0.006497
.1328, 0.01473
$#
** Your results for index finger then for fist, in mean +- std dev format. **
0.004453 +- 0.006497
0.01016 +- 0.01473
** Your reported lower and upper bounds for 'index finger' results and for 'fist' results. **
.01095, -.002044
.02489, -.00457
** The bounds on your interval of separation or overlap, and whether the intervals are separate or overlapping: **
-0.002044, 0.01095
overlap
** Can you or can you not conclude that your index-finger response time is different from your fist response time? **
I can conclude that my index finger response time is faster.
** Is this or is this not consistent with your original hypothesis regarding these time intervals? Explain thoroughly how your results lead to to accept or reject your hypothsis. **
They confirm my hypothesis. While the intervals are very close on the number line, the index finger ones have a smaller lower and upper bound, being closer to 0 than the fist times. I knew I could click faster with my index finger on the dominant hand than with the fist on the non-dominant hand.
** Optional additional comments and/or questions: **
20 minutes
** **
Your data look good, but your means are not correct (all your observations were between .11 sec and .17 sec, so your means must lie within this range), and without correct means it's hard to imagine that you got correct standard deviations.
Please repeat your calculations and resubmit.
"
I see what you did. However your also used the erroneous means to calculate your intervals and to test the hypothesis. You need to correct everything from that point down.
Shouldn't take you more than 5 minutes, but be sure you understand how the hypothesis is being tested (i.e., what the conditions are for accepting or rejecting the hypothesis that the first and finger have different frequencies).