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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 distribulion table (page 11 Click here to view the standard normal distribution table (page 2), O B. The sample sıze is large. O C. 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 O C. The individuals selected to be in the study O D. The question asked in the survey (e) Construct and interpret a 95% confidence interval for the population proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom. Select the correct choice below and fill in any answer boxes within your choice. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) O A. We are % confident the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between and O B. There is a % probability the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom between and () What ensures that the results of this study are representative of all adults 19 years of age or older? O A. The large sample size O B. Random sampling OC. The high confidence level O D. Sampling from adults 19 years of age or older

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 distribulion table (page 11 Click here to view the standard normal distribution table (page 2), O B. The sample sıze is large. O C. 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 O C. The individuals selected to be in the study O D. The question asked in the survey (e) Construct and interpret a 95% confidence interval for the population proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom. Select the correct choice below and fill in any answer boxes within your choice. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) O A. We are % confident the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between and O B. There is a % probability the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom between and () What ensures that the results of this study are representative of all adults 19 years of age or older? O A. The large sample size O B. Random sampling OC. The high confidence level O D. Sampling from adults 19 years of age or older

MATLAB: An Introduction with Applications
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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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 norma distribution table (page 1D) Click here to view the standard normal distribution table (page 2). В. The sample size is large. C. Its value is based on a sample. D. It is being used to make inferences. 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 B. Random errors C. The individuals selected to be in the study D. The question asked in the survey (e) Construct and interpret a 95% confidence interval for the population proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom. Select the correct choice below and fill in any answer boxes within your choice. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) O A. We are % confident the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between and B. There is a % probability the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between and (f) What ensures that the results of this study are representative of all adults 19 years of age or older? A. The large sample size B. Random sampling C. The high confidence level D. Sampling from adults 19 years of age or older
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 norma distribution table (page 1D) Click here to view the standard normal distribution table (page 2). В. The sample size is large. C. Its value is based on a sample. D. It is being used to make inferences. 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 B. Random errors C. The individuals selected to be in the study D. The question asked in the survey (e) Construct and interpret a 95% confidence interval for the population proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom. Select the correct choice below and fill in any answer boxes within your choice. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) O A. We are % confident the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between and B. There is a % probability the proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom is between and (f) What ensures that the results of this study are representative of all adults 19 years of age or older? A. The large sample size B. Random sampling C. The high confidence level D. Sampling from adults 19 years of age or older
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
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