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In a test of the effectiveness of garlic for lowering cholesterol, 50 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.2 and a standard deviation of 17.5. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. What is the confidence interval estimate of the population mean µ? mg/dL <μ

In a test of the effectiveness of garlic for lowering cholesterol, 50 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.2 and a standard deviation of 17.5. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. What is the confidence interval estimate of the population mean µ? mg/dL <μ

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 4GP
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In a test of the effectiveness of garlic for lowering cholesterol, 50 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before - after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.2 and a standard deviation of 17.5. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. C What is the confidence interval estimate of the population mean µ? mg/dL <μ< mg/dL (Round to two decimal places as needed.) What does the confidence interval suggest about the effectiveness of the treatment? O A. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. O B. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. O C. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. O D. The confidence interval limits do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
Transcribed Image Text:In a test of the effectiveness of garlic for lowering cholesterol, 50 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before - after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.2 and a standard deviation of 17.5. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. C What is the confidence interval estimate of the population mean µ? mg/dL <μ< mg/dL (Round to two decimal places as needed.) What does the confidence interval suggest about the effectiveness of the treatment? O A. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. O B. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. O C. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. O D. The confidence interval limits do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
2 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.3 0.9 1.0 1.1 12 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 23 24 25 2.6 2.7 2.8 2.9 3.0 31 3.2 3.3 3.4 3.50 and up 2 00 5000 5398 5793 6179 6554 6815 7257 7580 7881 8159 8413 8643 8849 9002 9192 9332 9452 9641 9713 9772 9621 9661 9063 9918 9608 9065 9061 9667 9006 9000 Cumulative Area from the LEFT .01 5040 5832 6217 .7291 7611 7910 8186 9049 9207 9345 9463 9564 9649 9719 9778 9826 9964 9920 9940 .9955 39906 9975 3982 9987 2221 9993 .02 5000 5478 5871 6255 6628 6985 7324 7642 7939 8212 3461 8686 1880 9004 9357 5474 9573 9656 9726 9783 9630 9668 5098 9622 9941 9967 9676 9001 0004 9006 POSITIVE z Scores .00 01 NOTE: For of above 3.49, use 0.9999 for the area 03 5120 5617 5910 7019 7357 7673 7967 8485 8708 20 9062 9370 9434 9664 9732 9788 9834 9901 9925 9943 9957 9960 9977 2991 9994 9997 03 04 5100 5557 5948 6331 6700 7054 .7389 7704 7995 8264 8508 8729 8025 8382 5495. 9091 9671 9738 9793 9438 3875 9904 9927 9945 9959 9909 3984 9988 9002 9667 04 05 5199 6368 6736 7068 7734 18023 8749 9115 9394 9505 9678 3744 9796 9929 9946 9970 9978 9989 9002 9994 9997 05 06 5239 6025 6406 6772 7123 .7454 7764 3051 8315 3554 8770 2012 9131 3279 9406 9515 9909 9931 9948 9971 9979 9989 3902 1996 9686 9693 3750 9756 9803 9608 9846 3881 8 07 5279 5675 .06 6443 6806 7157 3486 7794 B078 8340 8537 8790 9147 9418 9625 9884 9911 9949 9962 9972 9979 9985 9996 07 08 5319 5714 8103 6480 7190 7517 7823 4106 8365 8810 2017 9142 9429 9535 9625 6696 9812 3887 9913 9934 9951 39973 9980 3935 9990 3903 9995 9996 08 09 5359 5753 6141 6617 6879 7224 3549 7852 8133 8389 8621 8830 9015 9177 5019 9441 9645 9706 STET 1617 9800 9916 9006 9662 9064 9961 9998 09 Common Critical Values 2 0.0 0.1 0.2 04 0.5 06 07 08 0.9 1.0 1.1 1.2 1.4 1.5 1.6 17 1.8 1.9 20 21 22 2.3 24 25 26 27 2.8 29 3.0 3.1 32 33 3.4 3.50 and up 2
Transcribed Image Text:2 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.3 0.9 1.0 1.1 12 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 23 24 25 2.6 2.7 2.8 2.9 3.0 31 3.2 3.3 3.4 3.50 and up 2 00 5000 5398 5793 6179 6554 6815 7257 7580 7881 8159 8413 8643 8849 9002 9192 9332 9452 9641 9713 9772 9621 9661 9063 9918 9608 9065 9061 9667 9006 9000 Cumulative Area from the LEFT .01 5040 5832 6217 .7291 7611 7910 8186 9049 9207 9345 9463 9564 9649 9719 9778 9826 9964 9920 9940 .9955 39906 9975 3982 9987 2221 9993 .02 5000 5478 5871 6255 6628 6985 7324 7642 7939 8212 3461 8686 1880 9004 9357 5474 9573 9656 9726 9783 9630 9668 5098 9622 9941 9967 9676 9001 0004 9006 POSITIVE z Scores .00 01 NOTE: For of above 3.49, use 0.9999 for the area 03 5120 5617 5910 7019 7357 7673 7967 8485 8708 20 9062 9370 9434 9664 9732 9788 9834 9901 9925 9943 9957 9960 9977 2991 9994 9997 03 04 5100 5557 5948 6331 6700 7054 .7389 7704 7995 8264 8508 8729 8025 8382 5495. 9091 9671 9738 9793 9438 3875 9904 9927 9945 9959 9909 3984 9988 9002 9667 04 05 5199 6368 6736 7068 7734 18023 8749 9115 9394 9505 9678 3744 9796 9929 9946 9970 9978 9989 9002 9994 9997 05 06 5239 6025 6406 6772 7123 .7454 7764 3051 8315 3554 8770 2012 9131 3279 9406 9515 9909 9931 9948 9971 9979 9989 3902 1996 9686 9693 3750 9756 9803 9608 9846 3881 8 07 5279 5675 .06 6443 6806 7157 3486 7794 B078 8340 8537 8790 9147 9418 9625 9884 9911 9949 9962 9972 9979 9985 9996 07 08 5319 5714 8103 6480 7190 7517 7823 4106 8365 8810 2017 9142 9429 9535 9625 6696 9812 3887 9913 9934 9951 39973 9980 3935 9990 3903 9995 9996 08 09 5359 5753 6141 6617 6879 7224 3549 7852 8133 8389 8621 8830 9015 9177 5019 9441 9645 9706 STET 1617 9800 9916 9006 9662 9064 9961 9998 09 Common Critical Values 2 0.0 0.1 0.2 04 0.5 06 07 08 0.9 1.0 1.1 1.2 1.4 1.5 1.6 17 1.8 1.9 20 21 22 2.3 24 25 26 27 2.8 29 3.0 3.1 32 33 3.4 3.50 and up 2
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