1. There are four questions for this problem:

Find the lowest score on the final exam that would qualify a student for an? A.

Find the lowest score on the final exam that would qualify a student for a B.

Find the lowest score on the final exam that would qualify a student for a C.

Find the lowest score on the final exam that would qualify a student for a D.

In a large section of a statistics class. the points [or the nal exam are normally distributed. with a mean of 76 and a standard deviation of 9. Grades are assigned such that the top 10% receive A's. the next 20% received B's, the middle 40% receive C's, the next 20% receive B's, and the bottom 10% receive F's. Find the lowest score on the nal exam that would qualify a student for an A. a B, a C, and a D. Click here to view Page 1 of the Standard Normal Table. Click here to view Page 2 of the Standard Normal Table. The lowest score that would qualify a student for an A is I]. (Round up to the nearest integer as needed.) Standard Normal Table (Page 1) Standard Normal Table (Page 2) 0.09 0.08 0.07 0.06 0.05 0.04- 0.03 0.02 0.01 I 000200003000030.00030000300003000030000300003I -3.30.00030.00040000400004000040000400004000050000 | - 3.20.00050.000500005000060000600006000060000600007| z 0.00 0.01 0.02 0.03 0.04- 0.05 006 0.07 0.08 0 0.0 I50000504005050051200.5160051990523905279053190- 0.1I.53950543505475055170.55570.559605636056750571402 0.2 I.57930553205571059100.5945059570602606064061030. - 3.10.00070.0007000080.00080.00050000500009000090000 | . I .61 790.621 70.62 55062930633 10.63650640606443054800 - 3.00.001000010000110.00110.001100012000120001300013| .- I .6554065910.66250.66640.6700067360.67720.65080.68440. - 2.90001400014000150.0015000160.0016000170.001500015I . I_69150695006955070190.70540705507123071570.71900. 0.001900020000210.00210.00220002300023000240002 | 0.00260.00270.002800029000300003 1 0.00320003300034 l 0.00360.00370003800039000400004100043000440004 I 0.004800049000510.00520.00540.00550.00570.00590. .- I.7257072910.73240735707359074220745407486075170':I . I.755007("5110.76420767307704077340.776407794078230'1I .- I ..75510 79100. 79390. 79670 79950. 50230. 50510. 50780. 81060 a : I 5.15905156052120.523505264052590 53150. 53400 83650 - 2.4000640.00660006800069000710007300075000750005I | - 2.3000840008700089000910.009400096000990010200104I - 2.20.01100.01130.01160.01190.01220012500129001320.013 1.0 I 54.1 30 54350 54610. 54550. 55050. 55310. 55540. 55770. 85990 g 1 .1I.564305665056560.57050.5729057490.57700.57900.88100. 1 .2 I.5549055690555505907059250.59440596205980089970. 0.0143001460015000154001550.0162001660017000174| 0.0183001880.01920.01970020200207002120.021700222| 0.02330.02390.02440.02500.02560026200265002740.0251 | 0.0294003010.03070.03140032200329003360034400351 | 0.03670.0375003840.039200401004090.0415004270043 0.04550.046500475004850049500505005160.052600537I . I .903209049090660905209099091150.913109147091620. . - I .91920.920709222092360.92510.92650927909292093060. . I.93320.93450.93570.93700.93520.93940.94060.94180.94290. . I 9.5540 95640 95730 95520 95910 95990. 96050 96160 96250 .' -I 964.10 96490. 96560. 96640. 96710. 96750. 96560. 96930 96990 - 1.50.0559005710.058200594006060061500630006430065 | - 1.40.068100694007080.07210.073500749007640077500793| - 1 .30.08230.0838008530086900555009010.09150.093400951 | . - I.94520.9463094740945409495095050.9515095250953503 0.09850.10030102001038010560.107501093011120.1131I 0.11700.11900121001230012510127101292013140.133 | 013790140101423014460.146901492015150153901562| 0.16110.16350166001685017110.1736017620175501514| 0.18670189401922019490197702005020330.20610.2090I 0.2148021770220602236022660229602327023550235 0.24510.24830251402546025750261102643026760270 . I .95930959609595099010.990409906099090991 1 0.99130. . - I .991 509920099220992509927099290993109932099340. . I 9935099400994 10.99430.99450.99460.99450.99490.9951 0. . - I .995309955099560995709959099600996109962099630; . I ..99650 99660. 99670. 99650. 99690. 99700. 99710. 99720 99730 . ' -I \"99740 99750. 99760 99770 99770 99750. 99790. 99790. 99800. - 050277602810028430287702912029460295103015030 I | - 0.40.312103156031920.32280326403300033360.33720340 - 0.3034830.35200.35570359403632036690.37070374503753| - 0.20.38590389703936039740401 304052040900412904165| - 0.1 0.42470 .42860.43250.43640.4404044430445304 5220.4 562 | - 0.004641046810472104761045010.4540045500492004 E z 0.09 0.08 0.07 0.06 0.05 0.04- 0.03 0.02 0.01 . I .999309993099940999409994099940999409995099950.3 . I .9995099950999509996099960999609996099960.99960. . - I.99970.99970.99970.99970.99970.99970.99970.9997099970.5 z 0.00 0.01 0.02 0.03 0.04- 0.05 0.06 0.07 0.08 0 Find the zeros and the undefined values (if any) of the expression. (Enter your answers as a comma-separated list.) X 3 x + 3 X - 5 X = X