1. To gauge their fear of going to a dentist, a large group of adults completed the Modified Dental Anxiety Scale quest

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1. To gauge their fear of going to a dentist, a large group of adults completed the Modified Dental Anxiety Scale quest

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1. To gauge their fear of going to a dentist, a large group of adults completed the Modified Dental Anxiety Scalequestionnaire. Scores (X) on the scale ranges from zero (noanxiety) to 25 (extreme anxiety). Assume that thedistribution of scores is normal with mean µ= 13 and standarddeviation σ= 4. Find the probability that a randomlyselected adult scores between 13 -4 and 13 + 2*4 .
2. The SAT scores (x) of Florida high school students arenormally distributed with mean µ= 1,368 and standarddeviation σ= 97. Top 33% of these students are expectedto get full tuition scholarship. What is the minimum scorefor this scholarship?
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