? SU 2018 BAD 2323 Statisties Link skyler whatley &1 6/22/18 5:54 P Homework: Ch

Question

? SU 2018 BAD 2323 Statisties Link skyler whatley &1 6/22/18 5:54 P Homework: Chapter 5 Score: 0 of 1 pt HW Score: 25%, 1 7501 7 5.3.37 E Question Hop Scores on the scale range from0 (no aniety) to 20 (extreme anxlety). The mean score was 14 that the distribution of all scores on the Dental Aniety Scale is normal wth-14 and?#35 Complete parts a trough C Click here to view a table of areas under the standardized normal curve 1 4), (Round to the nearest hundredth as needed) b. Find the probability that someone scores between 13 and 18 on the Dental Anuliety Scale Ptiss18).?(Round to four decinal places as needed) your answer in the answer box and then click Check Answer O Type here to search

Explanation / Answer

a)

z score =(X-mean)/std deviation=(19-14)/3.5=1.43

b)P(13<X<18)=P(-0.29<Z<1.14)=0.8729-0.3859=0.4870

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