Suppose that you were asked to construct an 80% confidence interval based on the standard normal distribution. Use software or a table of critical values from the standard normal distribution to determine the positive critical value z, for the confidence interval. Give your answer to two decimal places, rounding to the nearest value if necessary. z=
Suppose that you were asked to construct an 80% confidence interval based on the standard normal distribution. Use software or a table of critical values from the standard normal distribution to determine the positive critical value z, for the confidence interval. Give your answer to two decimal places, rounding to the nearest value if necessary. z=
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Suppose that you were asked to construct an 80% confidence interval based on the standard
Give your answer to two decimal places, rounding to the nearest value if necessary.
z=

Transcribed Image Text:2.60
0.99534
0.99547
0.99560
0.99573
0.99585
0.99598
0.99609
0.99621
0.99632
0.99643
2.70
0.99653
0.99664
0.99674
0.99683
0.99693
0.99702
0.99711
0.99720
0.99728
0.99736
2.80
0.99744
0.99752
0.99760
0.99767
0.99774
0.99781
0.99788
0.99795
0.99801
0.99807
2.90
0.99813
0.99819
0.99825
0.99831
0.99836
0.99841
0.99846
0.99851
0.99856
0.99861
3.00
0.99865
0.99869
0.99874
0.99878
0.99882
0.99886
0.99889
0.99893
0.99896
0.99900
3.10
0.99903
0.99906
0.99910
0.99913
0.99916
0.99918
0.99921
0.99924
0.99926
0.99929
3.20
0.99931
0.99934
0.99936
0.99938
0.99940
0.99942
0.99944
0.99946
0.99948
0.99950
3.30
0.99952
0.99953
0.99955
0.99957
0.99958
0.99960
0.99961
0.99962
0.99964
0.99965
3.40
0.99966
0.99968
0.99969
0.99970
0.99971
0.99972
0.99973
0.99974
0.99975
0.99976
3.50
0.99977
0.99978
0.99978
0.99979
0.99980
0.99981
0.99981
0.99982
0.99983
0.99983
3.60
0.99984
0.99985
0.99985
0.99986
0.99986
0.99987
0.99987
0.99988
0.99988
0.99989
3.70
0.99989
0.99990
0.99990
0.99990
0.99991
0.99991
0.99992
0.99992
0.99992
0.99992
3.80
0.99993
0.99993
0.99993
0.99994
0.99994
0.99994
0.99994
0.99995
0.99995
0.99995
3.90
0.99995
0.99995
0.99996
0.99996
0.99996
0.99996
0.99996
0.99996
0.99997
0.99997
4.00
0.99997
0.99997
0.99997
0.99997
0.99997
0.99997
0.99998
0.99998
0.99998
0.99998

Transcribed Image Text:Table values represent cumulative area under curve to left of z score
Second decimal place in z
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
-4.00
0.00003
0.00003
0.00003
0.00003
0.00003
0.00003
0.00002
0.00002
0.00002
0.00002
-3.90
0.00005
0.00005
0.00004
0.00004
0.00004
0.00004
0.00004
0.00004
0.00003
0.00003
-3.80
0.00007
0.00007
0.00007
0.00006
0.00006
0.00006
0.00006
0.00005
0.00005
0.00005
3.70
0.00011
0.00010
0.00010
0.00010
0.00009
0.00009
0.00008
0.00008
0.00008
0.00008
-3.60
0.00016
0.00015
0.00015
0.00014
0.00014
0.00013
0.00013
0.00012
0.00012
0.00011
-3.50
0.00023
0.00022
0.00022
0.00021
0.00020
0.00019
0.00019
0.00018
0.00017
0.00017
-3.40
0.00034
0.00032
0.00031
0.00030
0.00029
0.00028
0.00027
0.00026
0.00025
0.00024
-3.30
0.00048
0.00047
0.00045
0.00043
0.00042
0.00040
0.00039
0.00038
0.00036
0.00035
3.20
0.00069
0.00066
0.00064
0.00062
0.00060
0.00058
0.00056
0.00054
0.00052
0.00050
-3.10
0.00097
0.00094
0.00090
0.00087
0.00084
0.00082
0.00079
0.00076
0.00074
0.00071
-3.00
0.00135
0.00131
0.00126
0.00122
0.00118
0.00114
0.00111
0.00107
0.00104
0.00100
0.00169
0.00233
-2.90
0.00187
0.00181
0.00175
0.00164
0.00159
0.00154
0.00149
0.00144
0.00139
-2.80
0.00256
0.00248
0.00240
0.00226
0.00219
0.00212
0.00205
0.00199
0.00193
-2.70
0.00347
0.00336
0.00326
0.00317
0.00307
0.00298
0.00289
0.00280
0.00272
0.00264
-2.60
0.00466
0.00453
0.00440
0.00427
0.00415
0.00402
0.00391
0.00379
0.00368
0.00357
-2.50
0.00621
0.00604
0.00587
0.00570
0.00554
0.00539
0.00523
0.00508
0.00494
0.00480
-2.40
0.00820
0.00798
0.00776
0.00755
0.00734
0.00714
0.00695
0.00676
0.00657
0.00639
-2.30
0.01072
0.01044
0.01017
0.00990
0.00964
0.00939
0.00914
0.00889
0.00866
0.00842
-2.20
0.01390
0.01355
0.01321
0.01287
0.01255
0.01222
0.01191
0.01160
0.01130
0.01101
-2.10
0.01786
0.01743
0.01700
0.01659
0.01618
0.01578
0.01539
0.01500
0.01463
0.01426
-2.00
0.02275
0.02222
0.02169
0.02118
0.02068
0.02018
0.01970
0.01923
0.01876
0.01831
-1.90
0.02872
0.02807
0.02743
0.02680
0.02619
0.02559
0.02500
0.02442
0.02385
0.02330
-1.80
0.03593
0.03515
0.03438
0.03362
0.03288
0.03216
0.03144
0.03074
0.03005
0.02938
-1.70
0.04457
0.04363
0.04272
0.04182
0.04093
0.04006
0.03920
0.03836
0.03754
0.03673
-1.60
0.05480
0.05370
0.05262
0.05155
0.05050
0.04947
0.04846
0.04746
0.04648
0.04551
-1.50
0.06681
0.06552
0.06426
0.06301
0.06178
0.06057
0.05938
0.05821
0.05705
0.05592
-1.40
0.08076
0.07927
0.07780
0.07636
0.07493
0.07353
0.07215
0.07078
0.06944
0.06811
1.30
0.09680
0.09510
0.09342
0.09176
0.09012
0.08851
0.08691
0.08534
0.08379
0.08226
-1.20
0.11507
0.11314
0.11123
0.10935
0.10749
0.10565
0.10383
0.10204
0.10027
0.09853
-1.10
0.13567
0.13350
0.13136
0.12924
0.12714
0.12507
0.12302
0.12100
0.11900
0.11702
-1.00
0.15866
0.15625
0.15386
0.15151
0.14917
0.14686
0.14457
0.14231
0.14007
0.13786
-0.90
0.18406
0.18141
0.17879
0.17619
0.17361
0.17106
0.16853
0.16602
0.16354
0.16109
-0.80
0.21186
0.20897
0.20611
0.20327
0.20045
0.19766
0.19489
0.19215
0.18943
0.18673
-0.70
0.24196
0.23885
0.23576
0.23270
0.22965
0.22663
0.22363
0.22065
0.21770
0.21476
-0.60
0.27425
0.27093
0.26763
0.26435
0.26109
0.25785
0.25463
0.25143
0.24825
0.24510
-0.50
0.30854
0.30503
0.30153
0.29806
0.29460
0.29116
0.28774
0.28434
0.28096
0.27760
-0.40
0.34458
0.34090
0.33724
0.33360
0.32997
0.32636
0.32276
0.31918
0.31561
0.31207
-0.30
0.38209
0.37828
0.37448
0.37070
0.36693
0.36317
0.35942
0.35569
0.35197
0.34827
-0.20
0.42074
0.41683
0.41294
0.40905
0.40517
0.40129
0.39743
0.39358
0.38974
0.38591
-0.10
0.46017
0.45620
0.45224
0.44828
0.44433
0.44038
0.43644
0.43251
0.42858
0.42465
0.00 (negative)
0.00 (positive)
0.50000
0.49601
0.49202
0.48803
0.48405
0.48006
0.47608
0.47210
0.46812
0.46414
0.51197
0.55172
0.50000
0.50399
0.50798
0.51595
0.51994
0.52392
0.52790
0.53188
0.53586
0.10
0.53983
0.54380
0.54776
0.55567
0.55962
0.56356
0.56749
0.57142
0.57535
0.57926
0.61791
0.20
0.58317
0.58706
0.59095
0.59483
0.59871
0.60257
0.60642
0.61026
0.61409
0.30
0.62172
0.62552
0.62930
0.63307
0.63683
0.64058
0.64431
0.64803
0.65173
0.40
0.65542
0.65910
0.66276
0.66640
0.67003
0.67364
0.67724
0.68082
0.68439
0.68793
0.50
0.69146
0.69497
0.69847
0.70194
0.70540
0.70884
0.71226
0.71566
0.71904
0.72240
0.60
0.72575
0.72907
0.73237
0.73565
0.73891
0.74215
0.74537
0.74857
0.75175
0.75490
0.70
0.75804
0.76115
0.76424
0.76730
0.77035
0.77337
0.77637
0.77935
0.78230
0.78524
0.80
0.78814
0.79103
0.79389
0.79673
0.79955
0.80234
0.80511
0.80785
0.81057
0.81327
0.90
0.81594
0.81859
0.82121
0.82381
0.82639
0.82894
0.83147
0.83398
0.83646
0.83891
1.00
0.84134
0.84375
0.84614
0.84849
0.85083
0.85314
0.85543
0.85769
0.85993
0.86214
1.10
0.86433
0.86650
0.86864
0.87076
0.87286
0.87493
0.87698
0.87900
0.88100
0.88298
1.20
0.88493
0.88686
0.88877
0.89065
0.89251
0.89435
0.89617
0.89796
0.89973
0.90147
1.30
0.90320
0.90490
0.90658
0.90824
0.90988
0.91149
0.91309
0.91466
0.91621
0.91774
1.40
0.91924
0.92073
0.92220
0.92364
0.92507
0.92647
0.92785
0.92922
0.93056
0.93189
1.50
0.93319
0.93448
0.93574
0.93699
0.93822
0.93943
0.94062
0.94179
0.94295
0.94408
1.60
0.94520
0.94630
0.94738
0.94845
0.94950
0.95053
0.95154
0.95254
0.95352
0.95449
1.70
0.95543
0.95637
0.95728
0.95818
0.95907
0.95994
0.96080
0.96164
0.96246
0.96327
1.80
0.96407
0.96485
0.96562
0.96638
0.96712
0.96784
0.96856
0.96926
0.96995
0.97062
1.90
0.97128
0.97193
0.97257
0.97320
0.97381
0.97441
0.97500
0.97558
0.97615
0.97670
2.00
0.97725
0.97778
0.97831
0.97882
0.97932
0.97982
0.98030
0.98077
0.98124
0.98169
2.10
0.98214
0.98257
0.98300
0.98341
0.98382
0.98422
0.98461
0.98500
0.98537
0.98574
2.20
0.98610
0.98645
0.98679
0.98713
0.98745
0.98778
0.98809
0.98840
0.98870
0.98899
2.30
0.98928
0.98956
0.98983
0.99010
0.99036
0.99061
0.99086
0.99111
0.99134
0.99158
2.40
0.99180
0.99202
0.99224
0.99245
0.99266
0.99286
0.99305
0.99324
0.99343
0.99361
2.50
0.99379
0.99396
0.99413
0.99430
0.99446
0.99461
0.99477
0.99492
0.99506
0.99520
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