The mean equals 100. One individual scores at the 20th percentile and has a raw score of 85. What is the standard deviation?
What will be an ideal response?
Question 2
When a psychologist rejects the null hypothesis at the .05 level, the results of a study indicate that
A) there is less than a 5 chance of getting such an extreme result if the null hypothesis is true.
B) there is more than a 5 chance of getting such an extreme result if the null hypothesis is true.
C) there is a 5 chance that the research hypothesis is true.
D) there is a 95 chance that the research hypothesis is true.
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