Why is this the correst one? a. Experimenters compared the variance for 2 seperate randomly assigned samples. b. The data from both are compared, for the statistical mean score for the population, but we don't have a population standard deviation. c. The same participants were tested more than once, and scores compared from the first condition to the second. d. The data from both is compared to an expected statistical mean score for the population, and we have
Hand written signature condition: (M = 12.89, SD = 3.98), t (27) = 0.14, p = 0.88
E - signature condition: (M = 14.97, SD = 5.05), t (30) = 2.17, p = 0.03
For each condition, the researchers used a single - sample t test. Why is this the correst one?
a. Experimenters compared the variance for 2 seperate randomly assigned samples.
b. The data from both are compared, for the statistical
c. The same participants were tested more than once, and scores compared from the first condition to the second.
d. The data from both is compared to an expected statistical mean score for the population, and we have a standard deviation for the population.
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