B. You are conducting a study on locomotion following spinal cord injury. You co
ID: 3227211 • Letter: B
Question
B. You are conducting a study on locomotion following spinal cord injury. You collect data from two groups (with and without spinal cord injury on walking speed, standing balance, and force generation in the legs. When looking for significant differences in these three measures, which ofthe following alpha levels should you test at?: a. Alpha 0.05 b. Alpha 0.05 c. Alpha 0.05 9. You collect data on walking speed from 10 individuals with knee osteoarthritis and 10 individuals without knee osteoarthritis. You expect that the individuals with osteoarthritis will walk slower. What critical t-value should you use? a. 1.833 b. 1.725 1.734 d. 1.812 10. You perform a t-test. The t value is 2.5, the criticaltvalue is 1.8. Is the result significant?: a. Yes b. No 11. You collect data asking what religion a person follows, the data generated is: a. nominal b. ordinal c, interval d. ratio 12. You measure blood pressure in 3 groups: endurance athletes, sprint athletes, and non-athletes. 5 participants in each group. What would be the appropriate critical F value? a. 6.94 b, 3.68 c. 3.74 d, 4.75Explanation / Answer
8. a alpha=0.05
this is fixed significant level. If p-value<alpha (0.05) then reject H0.
9. BASED on excel formula: "=TINV(0.05,18)" we get t-critical=2.1;
howevere option a is closest.
10. a. Yes, test is significant since t_obserevd >t_critical
11.a. Religion is a Nominal variable. It doesnt not contain any value/order etc.
12. c. 3.74
because "=FINV(0.05,2,14)"=3.74
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