# The t-test Assignment

This was a study performed to determine if 6 weeks of Cross-Training OR 6 weeks of Running will result in a greater weight loss (lbs). 80 people were recruited and put either into the ‘Cross-Training’ or ‘Running’ group (so 40 different people in each group). Both groups had their weight (lbs) measured before and after the 6-week exercise protocol (Cross-Training OR Running). The amount weight lost was calculated and used as the dependent variable. It was not sure which exercise group would on average lose more weight!

• In column B, count from 1 to 40 – remember this is just a count! (2)
• In column C, have a set of random values (Cross-Training) (4)
1. use the =randbetween command and have a range from 11 to 17
• In column D convert column C functions to values (4)
1. This will be your first set of data that you will use for the t-test
• In column E, have a set of random values (Running) (4)
1. use the =randbetween command and have a range from 16 to 26
• Convert the column E functions to values (in column F) (4)
1. This will be your second set of data that you will use for the t-test
• Calculate the mean and SD for each group (4)
• Perform the proper t-test (20)
1. Based on the SD values for each group
2. Whether your study is ‘between subject’ or ‘within subject’
3. Explain whether your test showed a significant difference or not using the example shown in lecture for both the generic and t-test specific methods for determining significance. Make sure to include the values in your explanation.
4. Explain the outcome of the t-test – meaning, in 7c. you explain if the test showed significance or not, but what does that mean in terms of a t-test and what SPECIFICALLY is being studied here!
5. Make sure to highlight the one-tailed OR two-tailed t-test information that you used to determine significance.
• Develop a VERTICAL bar (column) graph with the means of both groups in it (20)
1. In other words, your graph will only have a TOTAL of 2 bars (one for each group’s average). I should NOT see more than 2 bars on your graph!!!
2. Make sure to include proper standard deviation bars as taught in the lectures.
3. Have proper title with units for the Y axis and proper X axis titles (the groups’ name). DO NOT have a main title on your graph and do not have a legend.
• Neatness!! (10)
1. You will be getting marks for neatness
2. Include labels in each of your columns, so I know what’s what!
3. Show equations throughout your assignment
4. Use proper labels and units for headings & on the figure
5. Make sure to put your name(s) on the top left corner!

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