How does the unit normal table work for negative z-scores?
What will be an ideal response?
Suppose we want to know the likelihood of obtaining a z-score of ?2-.40 and lower. In this case, the percentages are the same, but now Column C contains the chance of getting this score or lower in the distribution. This is because Column C is the percentage of scores in the "tail" of the distribution, which is the portion that does not contain the mean of the distribution. Because negative z-scores are below the mean, the "tail" part is now the part that is lower than that score. Column B, the "body" of the distribution, shows the percentage for the portion of the distribution that does contain the mean. For negative z-scores, Column B will be the percentage of scores higher than that score. Thus, you will need to pay attention to the sign (+ or ?2-) of the z-score when you decide which column of the table to use in determining the correct percentage for scores you are looking for.
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According to your textbook, which of the following are actions that increase the chances of disease, injury, or early death?
a. health refusal factors b. neuroimmune risk factors c. behavioral risk factors d. Type B personality traits
According to a 2011 Gallup poll, ___________ of Americans favor same-sex marriage
A. 83% B. 53% C. 17% D. 25%
Explain why Piaget believed that representational thought was necessary for the development of object permanence
What will be an ideal response?
Systems theories provide explanations that are general, in the sense that they incorporate a very broad focus on development
Indicate whether the statement is true or false