Psychology students at a university completed the Dental Anxiety Scale questionnaire. Scores on the scale range...

  

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Psychology students at a university completed the Dental Anxiety Scale questionnaire. Scores on the scale range from 0 (no anxiety) to 20 (extreme anxiety). The mean score was 15 and the standard deviation was 3.5. Assume that the distribution of all scores on the Dental Anxiety Scale is normal with u = 15 and o=3.5. Complete parts a through c. Click here to view a table of areas under the standardized normal curve. ... a. Suppose you score a 16 on the Dental Anxiety Scale. Find the z-value for this score. Z= (Round to the nearest hundredth as needed.) b. Find the probability that someone scores between 14 and 19 on the Dental Anxiety Scale. P(14≤x≤19) = (Round to four decimal places as needed.) c. Find the probability that someone scores above 17 on the Dental Anxiety Scale. P(x> 17)= (Round to four decimal places as needed.) Psychology students at a university completed the Dental Anxiety Scale questionnaire. Scores on the scale range from 0 (no anxiety) to 20 (extreme anxiety). The mean score was 15 and the standard deviation was 3.5. Assume that the distribution of all scores on the Dental Anxiety Scale is normal with u = 15 and o=3.5. Complete parts a through c. Click here to view a table of areas under the standardized normal curve. ... a. Suppose you score a 16 on the Dental Anxiety Scale. Find the z-value for this score. Z= (Round to the nearest hundredth as needed.) b. Find the probability that someone scores between 14 and 19 on the Dental Anxiety Scale. P(14≤x≤19) = (Round to four decimal places as needed.) c. Find the probability that someone scores above 17 on the Dental Anxiety Scale. P(x> 17)= (Round to four decimal places as needed.)