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To gauge their fear of going to a dentist, a random sample of adults completed the Modified Dental Anxiety Scale questionnaire (BMC Oral Health, Vol. 9, 2009). Scores on the scale range from zero (no anxiety) to 25 (extreme anxiety). The mean score was 11 and the standard deviation was 4. Assume that the distribution of all scores on the Modified Dental Anxiety Scale is approximately normal with u = 11 and o =4. Complete parts a through c below. ..... a. Suppose you score a 10 on the Modified Dental Anxiety Scale. Find the z-value for this score. z= -.25 (Round to two decimal places as needed.) b. Find the probability that someone scores between 10 and 16 on the Modified Dental Anxiety Scale. The probability is (Round to four decimal places as needed.)

To gauge their fear of going to a dentist, a random sample of adults completed the Modified Dental Anxiety Scale questionnaire (BMC Oral Health, Vol. 9, 2009). Scores on the scale range from zero (no anxiety) to 25 (extreme anxiety). The mean score was 11 and the standard deviation was 4. Assume that the distribution of all scores on the Modified Dental Anxiety Scale is approximately normal with u = 11 and o =4. Complete parts a through c below. ..... a. Suppose you score a 10 on the Modified Dental Anxiety Scale. Find the z-value for this score. z= -.25 (Round to two decimal places as needed.) b. Find the probability that someone scores between 10 and 16 on the Modified Dental Anxiety Scale. The probability is (Round to four decimal places as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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To gauge their fear of going to a dentist, a random sample of adults completed the Modified Dental Anxiety Scale questionnaire (BMC Oral Health, Vol. 9, 2009). Scores on the scale range from zero (no anxiety) to 25 (extreme anxiety). The mean score was 11 and the standard deviation was 4. Assume that the distribution of all scores on the Modified Dental Anxiety Scale is approximately normal with u = 11 and o = 4. Complete parts a through c below. a. Suppose you score a 10 on the Modified Dental Anxiety Scale. Find the z-value for this score. z= -.25 (Round to two decimal places as needed.) b. Find the probability that someone scores between 10 and 16 on the Modified Dental Anxiety Scale. The probability is (Round to four decimal places as needed.)
Transcribed Image Text:To gauge their fear of going to a dentist, a random sample of adults completed the Modified Dental Anxiety Scale questionnaire (BMC Oral Health, Vol. 9, 2009). Scores on the scale range from zero (no anxiety) to 25 (extreme anxiety). The mean score was 11 and the standard deviation was 4. Assume that the distribution of all scores on the Modified Dental Anxiety Scale is approximately normal with u = 11 and o = 4. Complete parts a through c below. a. Suppose you score a 10 on the Modified Dental Anxiety Scale. Find the z-value for this score. z= -.25 (Round to two decimal places as needed.) b. Find the probability that someone scores between 10 and 16 on the Modified Dental Anxiety Scale. The probability is (Round to four decimal places as needed.)
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