Question
I have an assumption that Floridians drive faster than Non-Floridians, on average. To see if I am correct, I solicited the help of the Highway
I have an assumption that Floridians drive faster than Non-Floridians, on average. To see if I am correct, I solicited the help of the Highway Patrol one day. I sat with an officer, and we used a radar gun to measure the speeds of 31 randomly selected Floridian drivers and 31 randomly selected Non-Floridan drivers on a stretch of Alligator Alley (Part of I-75). We found that our sample of Floridian drivers had an average speed of 90 mph with a standard deviation of 20. Our sample of Non-Floridian drivers had an average speed of 73 MPH with a standard deviation of 6.
- State the null and alternative hypotheses (3 pts)
- Chose an alpha level. (1 pt) What exactly does this alpha level mean? (2 pts)
- Decide whether you are doing a 1-tailed or 2-tailed test (explain why) (2 pts)
- State your degrees of freedom. (3 pts)
- Find and report your critical value fort. (2 pts)
- Compute your observedt-value. (6 pts)
- Wrap words around your results. Is this a statistically significant difference? (4 pts)
- Calculate an effect size (d). (4 pts)
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