Please answer 7-5 B. 7-4. Consider the following sets of replicate measurements:*AВ*CD*EF3.570.240.8122.770.650.5143.170.220.7923.070.630.5033.170.100.7942.670.640.4863.30.9002.870.210.4972.53.20.472Calculate the mean and the standard deviation for each of these six data sets. Consider the95% confidence interval for each set of data. What does this interval mean?7-5. Calculate the 95% confidence interval for each set of data in Problem 7-4 if s is a goodestimate of o and has a value of: *set A, 0.20; set B, 0.070; *set C, 0.0090, set D, 0.30,*set E, 0.15; set F, 0.015.7-6. The last result in each set of data in Problem 7-4 may be an outlier. Apply Q test (95%confidence level) to determine whether or not there is a statistical basis for rejection.Reference: Skoo g DWest DHollor CI. Crouch S (20o Fundamentalc of Analytical

Answered: Image /qna-images/answer/2f8bf920-b4aa-4644-8b9f-67cebd60eb0d.jpg

Answered: Calculate the 95% confidence interval…

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

ChapterA1: Evaluation Of Analytical Data

Section: Chapter Questions

Problem A1.12QAP

See similar textbooks

Similar questions

The solubility of an unknown liquid was measured 4 times. The average solubility is 0.05897 mL/mL and the standard deviation is 0.0027 mL/mL. How should those values be reported? O 0.058970.0027 O 0.0590±E0.0027 0.059±0.0027 O 0.058970.003
8) Two different analytical methods are compared for determining Ca. The following are two sets of data. Set 1 Set 2 155.779 155.784 155.787 155.787 155.813 155.765 155.781 155.793 i. i. Determine the mean and the standard deviation in Set 1. Calculate the 95% confidence limit for data in Set 1. Identify a possible outlier in Set 2. Use the Q-test to determine whether it can be retained or rejected at 95% confidence level. ii.
Dr. Caras was characterizing a cytochrome (an iron containing protein) from a new strain of bacteria. He obtained eight measurements of the percent iron in the protein: 0.5806%, 0.5804%, 0.5796%, 0.5794%, 0.5919%, 0.5795%, 0.5805%, and 0.5793%. Calculate the mean (x) and standard deviation (s) for these results. x = 0.5812 2.84 X10-3 Incorrect Use the Grubbs test to determine if of these values is an outlier. What is the value of Gcalculated? Gcalculated 0.494 Incorrect Should this potential outlier be rejected with 95% confidence? Critical values of G can be found in this table. O The potential outlier should be rejected. The potential outlier should be kept. % % ро en uti si luti
9) The following results were obtained in the determination of Vitamin E mass in tablet samples. Sample 1 2 3 4 5 6 Weight of Vitamin E (mg) 249.1 249.9 251.2 250.2 244.8 251.0 i. Determine whether any data should be rejected or not at 90 % confidence level. ii. Calculate the mean and standard deviation of the data set above. ii. Express the mean weight of vitamin C at 99 % confidence interval.
Based on the given data, what is the λmax of cobalt? 0.1M Cobalt 300 0.451 325 0.467 350 0.584 375 0.629 400 0.694 425 0.673 450 0.541 475 0.433 500 0.423 525 0.327 550 0.264 575 0.245 600 0.233 625 0.211 650 0.189 675 0.187 700 0.165
Dr. Caras was characterizing a cytochrome (an iron containing protein) from a new strain of bacteria. He obtained eight measurements of the percent iron in the protein: 0.3205%, 0.3202%, 0.3196%, 0.3198%, 0.3316%, 0.3197%, 0.3208%, and 0.3197%. Calculate the mean () and standard deviation (s) for these results. x = Use the Grubbs test to determine if one of these values is an outlier. What is the value of Gealeulated? Gcalculated = Should this potential outlier be rejected with 95% confidence? Critical values of G can be found in this table. The potential outlier should be kept. The potential outlier should be rejected.
3. Identify the data set with the highest (a) precision and (b) accuracy. Data set Certified true Mean Standard Percent Error value deviation 1 0.500 0.444 0.041 2 1.00 1.33 0.253 50.00 45.20 0.041 100.0 99.1 3.22 23 3 4 CO
A method for the determination of the corticosteroid methylprednisolone acetate in solutions obtained from pharmaceutical preparations yielded a mean value of 3.7 mg mL with a standard deviation of 0.3 mg mL. For quality control purposes, the relative uncertainty in the concentration should be no more than 3%. How many samples of each batch should be analyzed to ensure that the relative standard deviation does not exceed 9% at the 95% confidence level? samples
[References) A method for the determination of the corticosteroid methylprednisolone acetate in solutions obtained from pharmaceutical preparations yielded a mean value of 3.7 mg mL with a standard deviation of 0.3 mg mL. For quality control purposes, the relative uncertainty in the concentration should be no more than 3%. How many samples of each batch should be analyzed to ensure that the relative standard deviation does not exceed 9% at the 95% confidence level? samples
A sample is analyzed 10 times for cobalt concentration with a mean of 10.32 ppm and an absolute standard deviation of 1.13 ppm. Calculate the confidence interval at the 95% confidence level. Degree of Freedom 1 2 3 4 5 6 7 8 9 10 t Values at 95% CL 12.706 4.303 3.182 2.776 2.571 2.447 2.365 2.306 2.262 2.228
Calculate the mean and standard deviation. 4.10(+0.02) x 0.0050(+0.0001) 1.97(+0.04)
Group # HRMJ 1 4 5 % H₂O 51.79010 51.4010 5200 52.8% 51.4 010 Find the standard deviation

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Instrumental Analysis

Chemistry

ISBN:

9781305577213

Author:

Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:

Cengage Learning

Fundamentals Of Analytical Chemistry

Chemistry

ISBN:

9781285640686

Author:

Skoog

Publisher:

Cengage

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781133949640

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

Principles of Instrumental Analysis

Chemistry

ISBN:

9781305577213

Author:

Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:

Cengage Learning

Fundamentals Of Analytical Chemistry

Chemistry

ISBN:

9781285640686

Author:

Skoog

Publisher:

Cengage

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781133949640

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

Calculate the 95% confidence interval for each set of data in Problem 7-4 if s is a good estimate of o and has a value of: *set A, 0.20; set B, 0.070; *set C, 0.0090, set D, 0.30, *set E, 0.15; set F, 0.015.

Calculate the 95% confidence interval for each set of data in Problem 7-4 if s is a good estimate of o and has a value of: set A, 0.20; set B, 0.070; set C, 0.0090, set D, 0.30, *set E, 0.15; set F, 0.015.