Answer Happy

Use ONLY the Standard Normal Tables (Link) to answer the following... A set of exam scores is normally distributed and has a mean of 77.1 and a standard deviation of 8.5. What is the probability that a randomly selected score will be less than 84? Answer - (Keep four decimal places in your answer) Note: Be careful...only use the 2 Table here and round z scores to two places since that's what the table uses...do not use technology or the 68-95.99.7 Rule. Tip: Use the Desmos calculator... 0
.00 -3.4 .0003 -3.3 .0005 -3.2 .0007 -3.1 .0010 -3.0 .0013 -2.9 .0019 -2.8 .0026 -2.7 0035 -2.6 .0047 -2.5 .0062 -2.4 .0082 -2.3 .0107 -2.2 .0139 -2.1 .0179 -2.0 .0228 -1.9 .0287 -1.8 0359 -1.7 .0446 -1.6 .0548 -1.5 .0668 -1.4 .0808 -1.3 .0968 -1.2 .1151 -1.1 .1357 -1.0 .1587 -0.9 .1841 -0.8 .2119 -0.7 .2420 -0.6 .2743 -0.5 .3085 -0.4 .3446 -0.3 .3821 -0.2 4207 -0.1 .4602 -0.0 .5000 .01 .02 .0003 .0003 .0005 .0005 .0007 .0006 .0009 .0009 .0013 .0013 .0018 .0018 .0025 .0024 .0034 .0033 .0045.0044 .0060 .0059 .0080 .0078 .0104 .0102 .0136 .0132 .0174 .0170 .0222 .0217 .0281 .0274 .0351.0344 .0436 .0427 .0537.0526 .0655 .0643 .0793.0778 .0951 .0934 .11311112 .1335 .1562 .1539 .1814 .1788 2090 .2061 .2389 .2358 .2709 .2676 .3050 .3015 .3409 .3372 .3783 3745 .4168 .4129 .4562 .4522 .4960 .4920 .03 1.04 .05 .06 .07 .08 .09 .0003 .0003 .0003 .0003 .0003 .0003 .0002 .0004 .0004 .0004 .0004 .0004 .0004 .0003 .0006 .0006 .0006 .0006 .0005 .0005 .0005 .0009.0008 .0008 0008 .0008 .0007 .0007 .0012.0012.0011 .0011.0011 .0010 .0010 .0017 .0016 .0016 .0015 .0015 .0014 .0014 .0023 .0023 .0022 .0021.0021 .0020 .0019 .0032 .0031 .0030 .0029 .0028 .0027 .0026 .0043 .0041 .0040 .0039 .0038 .0037 .0036 .0057 .0055 .0054 .0052 .0051 .0049 .0048 .0075 .0073 .0071 .0069 .0068 .0066 .0064 .0099 .0096 .0094 .0091 .0089 .0087 .0084 .0129 .0125 .0122 .0119 .0116 .0113 .0110 .0166 .0162 .0158 .0154 .0150 .0146 .0143 .0212 .0207 .0202 .0197 .0192 .0188 .0183 .0268 .0262 .0256 .0250 .0244 .0239 .0233 .0336 .0329 .0322 0314 .0307 .0301 .0294 .0418 .0409 .0401 .0392 .0384 .0375 .0367 .0516 .0505 .0495 .0485 .0475.0465 .0455 .0630 .0618 .0606 .0594 .0582 .0571 .0559 .0764 .0749 .0735 .0721 .0708 .0694 .0681 .0918 .0901 .0885 0869.0853 .0838 .0823 .1093 .1075 .1056 .1038 .1020 .1003 .0985 .1292 .1271 .1251 .1230 .1210 .1190 .1170 .1515 .1492 1469 .1446 .1423 .1401 .1379 .1762 .1736 .1711 .1685 .1660 .1635 1611 .2033 .2005 .1977 .1949 .1922 .1894 .1867 .2327 .2296 .2266 .2236 .2206 .2177 .2148 .2643 .2611 .2578 .2546 .2514 .2483 .2451 .2981 .2946 .2912 .2877 .2843 .2810 .2776 .3336 3300 .3264 .3228 .3192 3156 .3121 .3707 .3669 .3632 .3594 .3557 .3520 .3483 .4090 4052 4013 .3974 .3936 .3897 .3859 .4483 .4443 .4404 .4364 .4325 .4286 4247 .4880 .4840 .4801 .4761 .4721 .4681 .4641 .1314