Please answer letter b 3. You work in an analytical testing lab and have been asked by your supervisor to purchasenew pH meters to replace your old supply. You have identified four potential suppliersand now need to evaluate the performance of each pH meter. You obtained a solutionwith a known pH of 5.5. You performed 10 replicate measurements of the pH of thatknown solution using each of the four different pH meters and obtained the data shownbelow. From the following dataa. Calculate for the mean, standard deviation, and percent error for the data set A, Band C.b. Apply Q-test and Grubb's Test to determine if the extreme values are outliers.c. State the null and alternative hypotheses.d. Use MS Excel or Google sheets to determine if there is statistically significantdifference between the three methods at 95% confident level. pHpHpHmetermetermeterBrand ABrand BBrand C5.65.55.85.85.65.95.65.56.05.55.65.95.65.65.35.75.65.65.65.45.75.75.55.85.15.55.95.65.45.1

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Math

Probability

Please

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

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Please answer letter b

3. You work in an analytical testing lab and have been asked by your supervisor to purchase
new pH meters to replace your old supply. You have identified four potential suppliers
and now need to evaluate the performance of each pH meter. You obtained a solution
with a known pH of 5.5. You performed 10 replicate measurements of the pH of that
known solution using each of the four different pH meters and obtained the data shown
below. From the following data
a. Calculate for the mean, standard deviation, and percent error for the data set A, B
and C.
b. Apply Q-test and Grubb's Test to determine if the extreme values are outliers.
c. State the null and alternative hypotheses.
d. Use MS Excel or Google sheets to determine if there is statistically significant
difference between the three methods at 95% confident level.

Transcribed Image Text:pH pH pH meter meter meter Brand A Brand B Brand C 5.6 5.5 5.8 5.8 5.6 5.9 5.6 5.5 6.0 5.5 5.6 5.9 5.6 5.6 5.3 5.7 5.6 5.6 5.6 5.4 5.7 5.7 5.5 5.8 5.1 5.5 5.9 5.6 5.4 5.1

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