jsychology 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 13 and the standard deviation was 3.5. Assume that the distribution of all scores on the Dental Anxiety Scale is normal with p: 13 and cr = 3.5. Complete parts a through c. 31 Click hereto View a table of areas under the standardized normal curye. a. Suppose you score a 18 on the Dental Anxiety Scale. Find the z-yalue for this score. 2 = D {Round to the nearest hundredth as needed.) [3. Find the probability that someone scores between 12 and 1? on the Dental Anxiety Scale. 3(12 s x s1T}= |:| [Round to four decimal places as needed.) 1:. Find the probability that someone scores above 1? on the Dental Anxiety Scale. F'(x:b17)= D (Round to four decimal places as needed.) 0 101 12 03 07 108 09 .0040 JOOBO .0120 0160 10199 0239 10279 .0398 0319 10359 0478 .0517 JO5ST 10596 0794 0636 10675 0714 0871 0753 0910 0948 .1179 1036 1217 1064 1103 1255 1141 1293 133 1368 .1554 .1406 1443 1-480 .1591 _1517 -1628 1664 1700 -1736 .1772 1915 1950 -1844 _1879 .1985 2019 2054 .2123 .2157 2190 2257 2291 2357 2389 2472 2454 .2580 2486 .2611 2642 2517 .2673 2704 .2734 .2764 .2881 .2910 2939 2794 2823 .2967 2852 .2995 2123 .3051 3159 3078 3106 3133 3186 3212 3238 LO 3264 .313 3289 .3315 3461 3340 3365 3-495 3389 3503 3531 3554 3577 3509 3621 1.1 3643 3665 3708 3729 3745 3770 .3849 3790 3810 3830 .3907 3925 3944 3980 4032 .3962 4049 3997 4015 40182 4099 14 4115 .4192 4131 .4147 4207 4222 4162 .4236 4177 .4251 4265 .4332 4279 4292 4345 4357 4319 4370 4382 .4394 4-406 4418 4-429 4441 1.6 .4452 4474 4-484 .4495 .4505 1.7 4515 .4525 4535 4564 4573 4545 4582 4591 4599 4608 4641 4616 .46-19 4656 466 4671 1.9 4678 .4713 1686 4693 4719 4699 4726 .4732 1706 4738 .4744 2.0 4750 4772 4756 4778 4761 4767 4788 4793 479 4803 4808 4812 4817 2.1 4821 4826 4830 4834 4838 2.2 4842 4846 4861 4850 4854 4864 4865 2.1 4871 4875 4878 .4893 4884 .4846 4887 1898 4901 1890 4904 2.4 4906 4909 491 1 4918 1913 4920 4916 4925 4927 25 1929 4941 4938 4932 .4940 4944 4941 4936 4943 .4945 .4946 4948 .4949 4951 1952 2.6 .4953 .4955 14956 .4957 4959 2.7 -4960 4961 4965 .4952 .4966 4963 1967 1964 4968 .4969 28 -4970 4971 .4974 4972 4973 4975 4976 4974 4977 2.9 4977 .4978 1979 4981 4979 .4982 1981 .498 49844 3.0 498- .4985 .4987 .4985 .4987 4986 4987 4986 4988 4989 4989 4989 4990 1990 3.1 49903 49906 49910 49913 3.2 49916 49918 49921 49931 49924 49934 49926 488.19 499365 49938 499-40 3.3 49943 49944 .49952 499-46 .49953 49948 49955 49950 .49957 3.4 .49958 49960 .49966 49961 .49968 499762 49964 49969 .49970 49965 49971 3.5 49972 49973 49974 49977 49975 49978 49976 49981 49982 49983 3.6 49984 49985 49985 49086 3.7 49986 49987 49989 49988 .49990 49989 49990 .49991 3.8 49991 49992 49093 49993 49992 49992 49493 49992 49994 .49994 49994 49994 49995 49995 49095 49995 499-95 49976 49996 499-45 49997 49947 .00 _01 102 103 J06 06 .07 .08 09