Coursework F

These problems ask not just about z scores but also about proportions and percentages of cases under the curve. I advise you to draw little normal curves and try to map out what is being described (for instance, the area above (greater than) or below (less than) a specific z score. To do this, you will need to use the easy z score table). standard normal curve.

f. What proportion of cases have a z score above -1.6? Is the probability of this occurring low or high? (1 pt)

g. What proportion of cases have a z score below -1.6? ? Is the probability of this occurring low or high? (1 pt) (hint: check out column c)

h. What proportion of cases have between 18 arrests and 10 arrests? What percentage of cases does this represent? Is the probability of this occurring low or high? (1 pt)

i. What proportion of cases have more than 16 prior arrests? What percentage of cases does this represent? Is the probability of this occurring low or high? (1 pt)

j. What proportion of cases have fewer than 2 prior arrests? What percentage of cases does this represent? Is the probability of this occurring low or high? (1 pt)

p(1)

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