A survey found that​ women's heights are normally distributed with mean 63.5 in and standard deviation 2.5 in. A branch of the military requires​ women's heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too​ tall? b. If this branch of the military changes the height requirements so that all women are eligible except the shortest​ 1% and the tallest​ 2%, what are the new height​ requirements?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question

A survey found that​ women's heights are normally distributed with mean 63.5 in and standard deviation 2.5 in. A branch of the military requires​ women's heights to be between 58 in and 80 in.

a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too​ tall?
b. If this branch of the military changes the height requirements so that all women are eligible except the shortest​ 1% and the tallest​ 2%, what are the new height​ requirements?
POSITIVE z Scores
z Scores
Standard Normal (z) Distribution: Cumulative Area from the LEFT
.00
.01
02
.03
.04
.05
.06
.07
08
.09
0.0
5000
5040
.5120
5IG0
S199
.5239
5270
.5319
.5359
0.1
.5438
.5478
.5517
5557
.5596
.5636
.5675
5714
.5753
0.2
5795
S832
5871
5910
5948
5987
6026
6084
6141
0.3
.6179
6217
.6255
.6293
6331
.6368
.6406
.6443
6480
.6517
0.4
.6554
6591
G620
.GGG4
6700
.6736
.6772
GBOB
6844
.G879
0.5
6915
6950
6985
TORR
7123
7157
190
7224
0.6
7257
7291
7324
7357
7389
7422
7454
7486
7517
.7549
0,7
.7580
7642
7673
7704
.7734
7764
.7794
7823
,7852
0.8
.7801
7910
7939
7967
7995
8023
B05
8078
8106
.8133
0.9
8159
8186
8212
8238
8289
B315
8340
B365
10
8413
8438
8461
B485
8508
8531
8554
.8577
A5 99
.B621
8643
B665
B686
8708
8729
8749
8770
8790
8810
.8830
1.1
1.2
8849
s869
8888
8907
8925
8944
8962
8980
8997
9015
1.3
.9032
9049
9066
.9082
9099
.915
.9131
.9147
9162
.9177
14
9192
9207
9222
.9236
9251
9265
.9279
9292
9306
.9319
1.5
.9332
9345
9357
.9370
9382
.9394
.9406
9418
9429
9441
1.6
.9452
9463
9474
9484
9495 +
9505
9515
9525
9535
9545
1.7
.9554
9564
.9573
.9582
959)
.9599
.9608
9616
.9625
.9633
9649
9719
18
.9541
.9656
9664
9671
9578
.9686
9693
9699
.9706
1.9
.9713
9726
.9732
9738
.9744
.9750
9756
.9761
.9767
20
.9772
9778
.9783
.9788
9793
.9798
.9803
.9808
9812
.9817
21
.9821
9826
.9830
.9834
9838
.9842
.9846
.9850
9854
.9857
22
9861
S864
9868
9871
9875
9878
9881
.9884
.9887
.9890
2.3
.9893
9896
.9898
.9901
9904
.9906
.9909
.991
.9913
9916
2.4
.9918
9920
9922
.9025
9927
.9929
.9932
9934
.9936
25
.9938
9940
9941
9043
9945
.9946
.9948
.9949
9951
.9952
26
9953
9955
.9956
9957
9959
9960
.9961
9962
9965
2.7
.9965
9966
9967
9968
9969
9970
9971
9972
9973
.9974
2.8
.9974
3975
.9976
.9977
9977
.9970
.9979
9979
9980
9381
9986
9990
29
.9981
9982
.9982
.9983
9984
9984
.9985
9985
9986
3.0
9987
9987
9987
9988
9988
9989
9989
9989
.9990
3.1
9990
9991
9991
9991
9992
9992
9992
9992
9993
9993
3.2
.9993
9993
9994
9994
9994
9994
.9994
.9995
9995
.9995
3.3
9995
9995
.9995
g996
9996
9g96
9996
9996
9996
9997
3.4
9997
9997
9997
9997
9997
9997
9997
9997
9997
9998
3.50
9999
end up
NOTE. For values of z above 3.49. use 0.9999 for the area
Common Cri tical Value
"Use these common values that result from interpolation:
Confidence | Critical
Level
E score
Area
Value
1.646
0.9500
0.90
1645
2575
0.9950
0.95
196
0.99
2.575
Transcribed Image Text:POSITIVE z Scores z Scores Standard Normal (z) Distribution: Cumulative Area from the LEFT .00 .01 02 .03 .04 .05 .06 .07 08 .09 0.0 5000 5040 .5120 5IG0 S199 .5239 5270 .5319 .5359 0.1 .5438 .5478 .5517 5557 .5596 .5636 .5675 5714 .5753 0.2 5795 S832 5871 5910 5948 5987 6026 6084 6141 0.3 .6179 6217 .6255 .6293 6331 .6368 .6406 .6443 6480 .6517 0.4 .6554 6591 G620 .GGG4 6700 .6736 .6772 GBOB 6844 .G879 0.5 6915 6950 6985 TORR 7123 7157 190 7224 0.6 7257 7291 7324 7357 7389 7422 7454 7486 7517 .7549 0,7 .7580 7642 7673 7704 .7734 7764 .7794 7823 ,7852 0.8 .7801 7910 7939 7967 7995 8023 B05 8078 8106 .8133 0.9 8159 8186 8212 8238 8289 B315 8340 B365 10 8413 8438 8461 B485 8508 8531 8554 .8577 A5 99 .B621 8643 B665 B686 8708 8729 8749 8770 8790 8810 .8830 1.1 1.2 8849 s869 8888 8907 8925 8944 8962 8980 8997 9015 1.3 .9032 9049 9066 .9082 9099 .915 .9131 .9147 9162 .9177 14 9192 9207 9222 .9236 9251 9265 .9279 9292 9306 .9319 1.5 .9332 9345 9357 .9370 9382 .9394 .9406 9418 9429 9441 1.6 .9452 9463 9474 9484 9495 + 9505 9515 9525 9535 9545 1.7 .9554 9564 .9573 .9582 959) .9599 .9608 9616 .9625 .9633 9649 9719 18 .9541 .9656 9664 9671 9578 .9686 9693 9699 .9706 1.9 .9713 9726 .9732 9738 .9744 .9750 9756 .9761 .9767 20 .9772 9778 .9783 .9788 9793 .9798 .9803 .9808 9812 .9817 21 .9821 9826 .9830 .9834 9838 .9842 .9846 .9850 9854 .9857 22 9861 S864 9868 9871 9875 9878 9881 .9884 .9887 .9890 2.3 .9893 9896 .9898 .9901 9904 .9906 .9909 .991 .9913 9916 2.4 .9918 9920 9922 .9025 9927 .9929 .9932 9934 .9936 25 .9938 9940 9941 9043 9945 .9946 .9948 .9949 9951 .9952 26 9953 9955 .9956 9957 9959 9960 .9961 9962 9965 2.7 .9965 9966 9967 9968 9969 9970 9971 9972 9973 .9974 2.8 .9974 3975 .9976 .9977 9977 .9970 .9979 9979 9980 9381 9986 9990 29 .9981 9982 .9982 .9983 9984 9984 .9985 9985 9986 3.0 9987 9987 9987 9988 9988 9989 9989 9989 .9990 3.1 9990 9991 9991 9991 9992 9992 9992 9992 9993 9993 3.2 .9993 9993 9994 9994 9994 9994 .9994 .9995 9995 .9995 3.3 9995 9995 .9995 g996 9996 9g96 9996 9996 9996 9997 3.4 9997 9997 9997 9997 9997 9997 9997 9997 9997 9998 3.50 9999 end up NOTE. For values of z above 3.49. use 0.9999 for the area Common Cri tical Value "Use these common values that result from interpolation: Confidence | Critical Level E score Area Value 1.646 0.9500 0.90 1645 2575 0.9950 0.95 196 0.99 2.575
NEGATIVE z Scores
Standard Normal (2) Distribution: Cumulative Area from the LEFT
.00
.01
02
.03
.04
.05
.06
.07
08
.09
-3.50
and
lowor
.0001
.c003
.c005
-3.4
0003
0003
.0003
0003
0003
C003
0003
0002
-3.3
.0005
.000s
.0004
.0004
.0004
.0004
0004
0004
.0003
-3.2
.0007
D007
0006
.0006
.0006
.0006
0006
0005
0005
0005
-31
.0010
.0009
0009
.0009
0008
0008
0008
0007
0007
-3.0
.0013
D013
O013
012
o012
.oon
O010
-2.9
.0019
0018
0018
.0017
.O016
.0015
0015
.0014
.0014
0024
.0023
0023
.0021
0029
-2.8
.0026
0025
.0022
0021
.0020
.0019
-2.7
.0035
.0032
0031
.0030
0027
0026
-2.6
.0047
0045
0044
.0043
0041
.0040
0039
0057
0036
-2.5
.0062
0060
0057
.0055
0054
0052
• 0049
.0046
-2.4
.0082
.co80
0070
.0075
.0073
.0071
.0069
.00GG
.0064
-2.3
.0107
0104
.0102
.0099
0096
.0094
0087
.0084
-2.2
.0139
O136
0132
0129
0125
.0122
on9
O 16
on3
.O110
-21
.0179
0174
0170
.0106
.0162
.0130
0154
.0197
0150
0146
.0143
-2.0
.0226
0222
0217
0212
.0207
.0202
O 192
.0188
.0103
-19
.0287
0281
0274
.0268
0262
.0256
.0250
0244
0239
.0233
-18
.0359
D351
.O336
0529
.0322
0514
0307
0301
0294
-17
.0446
.0436
0427
.048
0409
.0401
0392
0384
.0375
.0367
-16
.0548
.0537
0526
.0516
0465
0505 * .0495
O618
.0606
0485
0475
.0455
-15
.0668
0655
0643
.0630
.0594
OS82
0571
0550
-14
.0808
0793
0778
.D764
0749
.0735
0721
0694
OGRI
-13
.0968
0951
.0934
.098
0901
0885
.o869
0853
0838
O823
-12
1151
J131
12
1093
1075
1056
1038
1020
1003
.0985
-11
1357
J335
1314
1292
1271
1251
1230
1210
1190
1170
-10
.1587
1562
15.59
1515
1492
14 69
1446
1423
1401
.1579
-0.9
1841
1814
1788
1762
1736
1711
1685
1660
1635
1611
-0.8
.2119
2090
2061
2033
2005
1977
1949
1922
1894
1867
-0.7
.2420
2309
2350
2327
2236
2266
2236
2206
2177
2140
-0.6
.2748
2709
2676
2643
.2611
2578
2546
2514
2483
.2451
-0.5
.3085
3050
3015
.2981
2946
2912
2877
2843
2810
.2776
-0.4
,3446
3409
3372
3336
3300
3264
3228
3192
2156
3121
-0.3
5821
3/83
3745
3/07
3669
3594
3557
3520
3483
-0.2
.4207
4168
A129
4090
4062
4013
3974
3936
3897
3859
-0.1
.4602
4562
4522
4483
4443
4404
4364
4325
4286
4247
-0.0
S000
1960
1920
A880
AB40
801
A761
AT21
A681
4641
NOTE: For values of z below -3.49, use 0.0001 for the area.
"Use these common values that result from interpolation:
Z score
Area
-1.645
0.0500
-2575
0.0050
Transcribed Image Text:NEGATIVE z Scores Standard Normal (2) Distribution: Cumulative Area from the LEFT .00 .01 02 .03 .04 .05 .06 .07 08 .09 -3.50 and lowor .0001 .c003 .c005 -3.4 0003 0003 .0003 0003 0003 C003 0003 0002 -3.3 .0005 .000s .0004 .0004 .0004 .0004 0004 0004 .0003 -3.2 .0007 D007 0006 .0006 .0006 .0006 0006 0005 0005 0005 -31 .0010 .0009 0009 .0009 0008 0008 0008 0007 0007 -3.0 .0013 D013 O013 012 o012 .oon O010 -2.9 .0019 0018 0018 .0017 .O016 .0015 0015 .0014 .0014 0024 .0023 0023 .0021 0029 -2.8 .0026 0025 .0022 0021 .0020 .0019 -2.7 .0035 .0032 0031 .0030 0027 0026 -2.6 .0047 0045 0044 .0043 0041 .0040 0039 0057 0036 -2.5 .0062 0060 0057 .0055 0054 0052 • 0049 .0046 -2.4 .0082 .co80 0070 .0075 .0073 .0071 .0069 .00GG .0064 -2.3 .0107 0104 .0102 .0099 0096 .0094 0087 .0084 -2.2 .0139 O136 0132 0129 0125 .0122 on9 O 16 on3 .O110 -21 .0179 0174 0170 .0106 .0162 .0130 0154 .0197 0150 0146 .0143 -2.0 .0226 0222 0217 0212 .0207 .0202 O 192 .0188 .0103 -19 .0287 0281 0274 .0268 0262 .0256 .0250 0244 0239 .0233 -18 .0359 D351 .O336 0529 .0322 0514 0307 0301 0294 -17 .0446 .0436 0427 .048 0409 .0401 0392 0384 .0375 .0367 -16 .0548 .0537 0526 .0516 0465 0505 * .0495 O618 .0606 0485 0475 .0455 -15 .0668 0655 0643 .0630 .0594 OS82 0571 0550 -14 .0808 0793 0778 .D764 0749 .0735 0721 0694 OGRI -13 .0968 0951 .0934 .098 0901 0885 .o869 0853 0838 O823 -12 1151 J131 12 1093 1075 1056 1038 1020 1003 .0985 -11 1357 J335 1314 1292 1271 1251 1230 1210 1190 1170 -10 .1587 1562 15.59 1515 1492 14 69 1446 1423 1401 .1579 -0.9 1841 1814 1788 1762 1736 1711 1685 1660 1635 1611 -0.8 .2119 2090 2061 2033 2005 1977 1949 1922 1894 1867 -0.7 .2420 2309 2350 2327 2236 2266 2236 2206 2177 2140 -0.6 .2748 2709 2676 2643 .2611 2578 2546 2514 2483 .2451 -0.5 .3085 3050 3015 .2981 2946 2912 2877 2843 2810 .2776 -0.4 ,3446 3409 3372 3336 3300 3264 3228 3192 2156 3121 -0.3 5821 3/83 3745 3/07 3669 3594 3557 3520 3483 -0.2 .4207 4168 A129 4090 4062 4013 3974 3936 3897 3859 -0.1 .4602 4562 4522 4483 4443 4404 4364 4325 4286 4247 -0.0 S000 1960 1920 A880 AB40 801 A761 AT21 A681 4641 NOTE: For values of z below -3.49, use 0.0001 for the area. "Use these common values that result from interpolation: Z score Area -1.645 0.0500 -2575 0.0050
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