(d) Explain why the point estimate found in part (c) is a statistic. Explain why it is a random variable. What is the source of variability in the random variable? Why is the point estimate found in part (c) a statistic? O A. It is being used to make inferences. O B. Its value may change depending on the individuals in the survey. OC. It is information obtained from a survey. O D. The sample size is large. O E. Its value is based on a sample. Why is the point estimate found in part (c) a random variable? O A. It is information obtained from a survey. B. The sample size is large. OC. Its value is based on a sample. O D. It is being used to make inferences. O E. Its value may change depending on the individuals in the survey. What is the source of variability in the random variable? O A. The sample size O B. Random errors OC. The individuals selected to be in the study O D. The question asked in the survey

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Question
Standard Normal Distribution Table (page 1)
i
Standard Normal Distribution Table (page 2)
Area
Area
Standard Normal Distribution
Standard Normal Distribution
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.0003
0.0005
0.0006
0.0009
0.0013
0.5199
0.5596
0.5987
0.5359
0.5753
0.6141
0.0003
0.0005
0.0003
0.0004
0.0006
0.0003
0.0004
0.0006
0.0003
-3.4
-3.3
-3.2
-3.1
-3.0
0.0003
0.0004
0.0005
0.0003
0.0004
0.0002
0.0003
0.0005
0.5000
0.5398
0.5793
0.5120
0.5517
0.5910
0.5160
0.5557
0.5948
0.5239
0.5636
0.6026
0.5319
0.5714
0.6103
0.0003
0.0005
0.0003
0.0004
0.0006
0.0
0.5040
0.5438
0.5832
0.5080
0.5478
0.5871
0.6255
0.6628
0.5279
0.5675
0.6064
0.6443
0.6808
0.1
0.2
0.0004
0.0007
0.0007
0.0006
0.0005
0.6368
0.6736
0.6517
0.6879
0.0009
0.0008
0.0008
0.0011
0.0008
0.0011
0.0007
0.0010
0.0007
0.0010
0.0013
0.0009
0.0012
0.0008
0.0011
0.3
0.4
0.6217
0.6591
0.6179
0.6293
0.6664
0.6331
0.6700
0.6406
0.6772
0.6480
0.6844
0.0013
0.0012
0.0010
0.6554
-29
-2.8
-2.7
0.0019
0.0026
0.0035
0.0018
0.0025
0.0034
0.0045
0.0018
0.0024
0.0033
0.0017
0.0023
0.0032
0.0016
0.0023
0.0031
0.0016
0.0022
0.0030
0.0015
0.0021
0.0029
0.0015
0.0021
0.0028
0.0014
0.0020
0.0027
0.0014
0.0019
0.0026
0.0036
0.0048
0.6915
0.7257
0.7580
0.7881
0.8159
0.6950
0.7291
0.7611
0.6985
0.7324
0.7642
0.7939
0.8212
0.7019
0.7357
0.7673
0.7967
0.7054
0.7389
0.7704
0.7088
0.7422
0.7734
0.7123
0.7454
0.7764
0.8051
0.8315
0.7157
0.7486
0.7794
0.7190
0.7517
0.7823
0.7224
0.7549
0.7852
0.8133
0.8389
0.5
0.6
0.7
-2.6
-2.5
0.0047
0.0062
0.0040
0.0054
0.0039
0.0052
0.0037
0.0049
0.7995
0.8264
0.8023
0.8289
0.8078
0.8340
0.8106
0.8365
0.0044
0.0043
0.0041
0.0038
0.0051
0.8
0.7910
0.0060
0.0059
0.0057
0.0055
0.9
0.8186
0.8238
-2.4
-2.3
-2.2
0.0082
0.0107
0.0139
0.0080
0.0104
0.0136
0.0078
0.0102
0.0132
0.0075
0.0099
0.0129
0.0073
0.0096
0.0125
0.0071
0.0094
0.0122
0.0069
0.0091
0.0119
0.0068
0.0089
0.0116
0.0066
0.0087
0.0064
0.0084
1.0
1.1
1.2
0.8413
0.8643
0.8849
0.8438
0.8665
0.8869
0.8461
0.8686
0.8888
0.8485
0.8708
0.8907
0.8508
0.8729
0.8925
0.8531
0.8749
0.8944
0.9115
0.9265
0.8554
0.8770
0.8962
0.8577
0.8790
0.8599
0.8810
0.8997
0.8621
0.8830
0.9015
0.0113
0.0110
0.8980
-2.1
-2.0
0.0170
0.0217
0.0162
0.0207
0.0158
0.0202
0.0154
0.0197
0.9066
0.9222
0.9162
0.9306
0.0150
0.0179
0.0228
0.0174
0.0222
0.0166
0.0212
0.0146
0.0188
0.0143
0.0183
1.3
1.4
0.9032
0.9192
0.9049
0.9207
0.9082
0.9236
0.9147
0.9292
0.9177
0.9319
0.9099
0.9131
0.0192
0.9251
0.9279
0.0287
0.0359
0.0446
0.0256
0.0322
0.0401
0.0495
0.0606
0.9357
0.9474
0.9573
0.9656
0.9726
0.9394
0.9505
0.9599
0.9441
0.9545
0.9633
0.9706
0.0281
0.0351
0.0268
0.0336
0.0418
0.0516
0.0630
0.0250
-1.9
-1.8
-1.7
0.0274
0.0344
0.0427
0.0526
0.0643
0.0262
0.0329
0.0409
0.0505
0.0618
0.0244
0.0307
0.0384
0.0239
0.0301
0.0375
0.0465
0.0571
0.0233
0.0294
0.0367
1.5
1.6
1.7
1.8
1.9
0.9332
0.9452
0.9554
0.9641
0.9713
0.9345
0.9463
0.9564
0.9370
0.9484
0.9582
0.9664
0.9732
0.9382
0.9495
0.9591
0.9406
0.9515
0.9608
0.9418
0.9525
0.9616
0.9429
0.9535
0.9625
0.0314
0.0436
0.0392
0.0548
0.0668
0.0537
0.0655
0.0485
0.0594
0.9671
0.9738
0.9693
0.9756
-1.6
0.0475
0.0582
0.0455
0.0559
0.9649
0.9678
0.9744
0.9686
0.9750
0.9699
0.9761
-1.5
0.9719
0.9767
-1.4
-1.3
-1.2
0.0808
0.0968
0.1151
0.0793
0.0951
0.1131
0.1335
0.1562
0.0778
0.0934
0.1112
0.1314
0.1539
0.0764
0.0918
0.1093
0.0749
0.0901
0.1075
0.0735
0.0885
0.1056
0.0721
0.0869
0.1038
0.0708
0.0853
0.1020
0.0694
0.0838
0.1003
0.0681
0.0823
0.0985
2.0
2.1
2.2
0.9772
0.9821
0.9861
0.9778
0.9826
0.9864
0.9783
0.9830
0.9868
0.9788
0.9834
0.9871
0.9793
0.9838
0.9875
0.9798
0.9842
0.9878
0.9803
0.9846
0.9881
0.9808
0.9850
0.9884
0.9812
0.9854
0.9887
0.9817
0.9857
0.9890
0.1292
0.1515
0.1251
0.1469
0.1210
0.1423
0.1170
0.1379
0.9906
0.9929
0.9893
-1.1
-1.0
0.1357
0.1587
0.1271
0.1492
0.1230
0.1446
0.1190
0.1401
2.3
2.4
0.9896
0.9920
0.9898
0.9922
0.9901
0.9925
0.9904
0.9927
0.9909
0.9931
0.9911
0.9932
0.9913
0.9934
0.9916
0.9918
0.9936
-0.9
0.1841
0.1814
0.1788
0.1762
0.1736
0.1711
0.1685
0.1660
0.1635
0.1611
2.5
0.9938
0.9940
0.9941
0.9943
0.9945
0.9946
0.9948
0.9949
0.9951
0.9952
A004
Transcribed Image Text:Standard Normal Distribution Table (page 1) i Standard Normal Distribution Table (page 2) Area Area Standard Normal Distribution Standard Normal Distribution 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.0003 0.0005 0.0006 0.0009 0.0013 0.5199 0.5596 0.5987 0.5359 0.5753 0.6141 0.0003 0.0005 0.0003 0.0004 0.0006 0.0003 0.0004 0.0006 0.0003 -3.4 -3.3 -3.2 -3.1 -3.0 0.0003 0.0004 0.0005 0.0003 0.0004 0.0002 0.0003 0.0005 0.5000 0.5398 0.5793 0.5120 0.5517 0.5910 0.5160 0.5557 0.5948 0.5239 0.5636 0.6026 0.5319 0.5714 0.6103 0.0003 0.0005 0.0003 0.0004 0.0006 0.0 0.5040 0.5438 0.5832 0.5080 0.5478 0.5871 0.6255 0.6628 0.5279 0.5675 0.6064 0.6443 0.6808 0.1 0.2 0.0004 0.0007 0.0007 0.0006 0.0005 0.6368 0.6736 0.6517 0.6879 0.0009 0.0008 0.0008 0.0011 0.0008 0.0011 0.0007 0.0010 0.0007 0.0010 0.0013 0.0009 0.0012 0.0008 0.0011 0.3 0.4 0.6217 0.6591 0.6179 0.6293 0.6664 0.6331 0.6700 0.6406 0.6772 0.6480 0.6844 0.0013 0.0012 0.0010 0.6554 -29 -2.8 -2.7 0.0019 0.0026 0.0035 0.0018 0.0025 0.0034 0.0045 0.0018 0.0024 0.0033 0.0017 0.0023 0.0032 0.0016 0.0023 0.0031 0.0016 0.0022 0.0030 0.0015 0.0021 0.0029 0.0015 0.0021 0.0028 0.0014 0.0020 0.0027 0.0014 0.0019 0.0026 0.0036 0.0048 0.6915 0.7257 0.7580 0.7881 0.8159 0.6950 0.7291 0.7611 0.6985 0.7324 0.7642 0.7939 0.8212 0.7019 0.7357 0.7673 0.7967 0.7054 0.7389 0.7704 0.7088 0.7422 0.7734 0.7123 0.7454 0.7764 0.8051 0.8315 0.7157 0.7486 0.7794 0.7190 0.7517 0.7823 0.7224 0.7549 0.7852 0.8133 0.8389 0.5 0.6 0.7 -2.6 -2.5 0.0047 0.0062 0.0040 0.0054 0.0039 0.0052 0.0037 0.0049 0.7995 0.8264 0.8023 0.8289 0.8078 0.8340 0.8106 0.8365 0.0044 0.0043 0.0041 0.0038 0.0051 0.8 0.7910 0.0060 0.0059 0.0057 0.0055 0.9 0.8186 0.8238 -2.4 -2.3 -2.2 0.0082 0.0107 0.0139 0.0080 0.0104 0.0136 0.0078 0.0102 0.0132 0.0075 0.0099 0.0129 0.0073 0.0096 0.0125 0.0071 0.0094 0.0122 0.0069 0.0091 0.0119 0.0068 0.0089 0.0116 0.0066 0.0087 0.0064 0.0084 1.0 1.1 1.2 0.8413 0.8643 0.8849 0.8438 0.8665 0.8869 0.8461 0.8686 0.8888 0.8485 0.8708 0.8907 0.8508 0.8729 0.8925 0.8531 0.8749 0.8944 0.9115 0.9265 0.8554 0.8770 0.8962 0.8577 0.8790 0.8599 0.8810 0.8997 0.8621 0.8830 0.9015 0.0113 0.0110 0.8980 -2.1 -2.0 0.0170 0.0217 0.0162 0.0207 0.0158 0.0202 0.0154 0.0197 0.9066 0.9222 0.9162 0.9306 0.0150 0.0179 0.0228 0.0174 0.0222 0.0166 0.0212 0.0146 0.0188 0.0143 0.0183 1.3 1.4 0.9032 0.9192 0.9049 0.9207 0.9082 0.9236 0.9147 0.9292 0.9177 0.9319 0.9099 0.9131 0.0192 0.9251 0.9279 0.0287 0.0359 0.0446 0.0256 0.0322 0.0401 0.0495 0.0606 0.9357 0.9474 0.9573 0.9656 0.9726 0.9394 0.9505 0.9599 0.9441 0.9545 0.9633 0.9706 0.0281 0.0351 0.0268 0.0336 0.0418 0.0516 0.0630 0.0250 -1.9 -1.8 -1.7 0.0274 0.0344 0.0427 0.0526 0.0643 0.0262 0.0329 0.0409 0.0505 0.0618 0.0244 0.0307 0.0384 0.0239 0.0301 0.0375 0.0465 0.0571 0.0233 0.0294 0.0367 1.5 1.6 1.7 1.8 1.9 0.9332 0.9452 0.9554 0.9641 0.9713 0.9345 0.9463 0.9564 0.9370 0.9484 0.9582 0.9664 0.9732 0.9382 0.9495 0.9591 0.9406 0.9515 0.9608 0.9418 0.9525 0.9616 0.9429 0.9535 0.9625 0.0314 0.0436 0.0392 0.0548 0.0668 0.0537 0.0655 0.0485 0.0594 0.9671 0.9738 0.9693 0.9756 -1.6 0.0475 0.0582 0.0455 0.0559 0.9649 0.9678 0.9744 0.9686 0.9750 0.9699 0.9761 -1.5 0.9719 0.9767 -1.4 -1.3 -1.2 0.0808 0.0968 0.1151 0.0793 0.0951 0.1131 0.1335 0.1562 0.0778 0.0934 0.1112 0.1314 0.1539 0.0764 0.0918 0.1093 0.0749 0.0901 0.1075 0.0735 0.0885 0.1056 0.0721 0.0869 0.1038 0.0708 0.0853 0.1020 0.0694 0.0838 0.1003 0.0681 0.0823 0.0985 2.0 2.1 2.2 0.9772 0.9821 0.9861 0.9778 0.9826 0.9864 0.9783 0.9830 0.9868 0.9788 0.9834 0.9871 0.9793 0.9838 0.9875 0.9798 0.9842 0.9878 0.9803 0.9846 0.9881 0.9808 0.9850 0.9884 0.9812 0.9854 0.9887 0.9817 0.9857 0.9890 0.1292 0.1515 0.1251 0.1469 0.1210 0.1423 0.1170 0.1379 0.9906 0.9929 0.9893 -1.1 -1.0 0.1357 0.1587 0.1271 0.1492 0.1230 0.1446 0.1190 0.1401 2.3 2.4 0.9896 0.9920 0.9898 0.9922 0.9901 0.9925 0.9904 0.9927 0.9909 0.9931 0.9911 0.9932 0.9913 0.9934 0.9916 0.9918 0.9936 -0.9 0.1841 0.1814 0.1788 0.1762 0.1736 0.1711 0.1685 0.1660 0.1635 0.1611 2.5 0.9938 0.9940 0.9941 0.9943 0.9945 0.9946 0.9948 0.9949 0.9951 0.9952 A004
In a survey conducted by a reputable marketing agency, 223 of 1000 adults 19 years of age or older confessed to bringing and using their cell phone every trip to the bathroom (confessions included texting and answering phone calls). Complete
parts (a) through (f) below.
Click here to view the standard normal distribution table (page 1)
Click here to view the standard normal distribution table (page 2).
(d) Explain why the point estimate found in part (c) is a statistic. Explain why it is a random variable. What is the source of variability in the random variable?
Why is the point estimate found in part (c) a statistic?
A. It is being used to make inferences.
B. Its value may change depending on the individuals in the survey.
O C. It is information obtained from a survey.
D. The sample size is large.
E. Its value is based on a sample.
Why is the point estimate found in part (c) a random variable?
O A. It is information obtained from a survey.
B. The sample size is large.
O C. Its value is based on a sample.
O D. It is being used to make inferences.
O E. Its
lue may change depending on
individuals in the survey.
What is the source of variability in the random variable?
A. The sample size
B. Random errors
C. The individuals selected to be in the study
O D. The question asked in the survey
Transcribed Image Text:In a survey conducted by a reputable marketing agency, 223 of 1000 adults 19 years of age or older confessed to bringing and using their cell phone every trip to the bathroom (confessions included texting and answering phone calls). Complete parts (a) through (f) below. Click here to view the standard normal distribution table (page 1) Click here to view the standard normal distribution table (page 2). (d) Explain why the point estimate found in part (c) is a statistic. Explain why it is a random variable. What is the source of variability in the random variable? Why is the point estimate found in part (c) a statistic? A. It is being used to make inferences. B. Its value may change depending on the individuals in the survey. O C. It is information obtained from a survey. D. The sample size is large. E. Its value is based on a sample. Why is the point estimate found in part (c) a random variable? O A. It is information obtained from a survey. B. The sample size is large. O C. Its value is based on a sample. O D. It is being used to make inferences. O E. Its lue may change depending on individuals in the survey. What is the source of variability in the random variable? A. The sample size B. Random errors C. The individuals selected to be in the study O D. The question asked in the survey
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