(iv) The mean level of Mn in fruit juice samples (n = 5) detected by Mn absorbance at 279.5 nm was found to be 20.934 ± 2.362 ng / g. Using this information report the experimental uncertainty based on a confidence interval of 50% and 95%. Comment on the effect of increased sampling on the confidence interval for values of the same mean and standard deviation. Degrees of Freedom 50 1 1.000 0.816 0.765 0.741 0.727 ~ 3 +5 2 4 Confidence level (%) 90 95 98 6.314 12.706 31.821 2.920 4.303 6.965 2.353 3.182 4.541 2.132 2.776 3.747 2.015 2.571 3.365 99 99.5 63.656 127.321 9.925 14.089 5.841 7.453 4.604 5.598 4.032 4.773 100 636.578 31.598 12.924 8.610 6.869

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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(iv) The mean level of Mn in fruit juice samples (n = 5) detected by Mn absorbance
at 279.5 nm was found to be 20.934 ± 2.362 ng / g. Using this information report
the experimental uncertainty based on a confidence interval of 50% and 95%.
Comment on the effect of increased sampling on the confidence interval for
values of the same mean and standard deviation.
Degrees of Freedom 50
1
1.000
2
0.816
3
0.765
0.741
0.727
4
5
Confidence level (%)
95
98
12.706 31.821
4.303
6.965
3.182
4.541
2.776
3.747
2.571
3.365
90
6.314
2.920
2.353
2.132
2.015
99
63.656
9.925
5.841
4.604
4.032
99.5
127.321
14.089
7.453
5.598
4.773
100
636.578
31.598
12.924
8.610
6.869
Transcribed Image Text:(iv) The mean level of Mn in fruit juice samples (n = 5) detected by Mn absorbance at 279.5 nm was found to be 20.934 ± 2.362 ng / g. Using this information report the experimental uncertainty based on a confidence interval of 50% and 95%. Comment on the effect of increased sampling on the confidence interval for values of the same mean and standard deviation. Degrees of Freedom 50 1 1.000 2 0.816 3 0.765 0.741 0.727 4 5 Confidence level (%) 95 98 12.706 31.821 4.303 6.965 3.182 4.541 2.776 3.747 2.571 3.365 90 6.314 2.920 2.353 2.132 2.015 99 63.656 9.925 5.841 4.604 4.032 99.5 127.321 14.089 7.453 5.598 4.773 100 636.578 31.598 12.924 8.610 6.869
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