Week 9 Problem Set Name: Nicolas Ipeker
Homework # 9 Report Date: 10/31/2021
1. ASSIGNMENT / PROBLEM
1. "Comparison tests" sheet:
a) "Tablet Weight" column: The sample data represents the weights of tablets from an experimental
batch produced after a process change. Did the Historical Process Average for the tablet weight of
150 mg change after the process change? Explain.
b) "Machine-1" and "Machine-2" columns: Compare the data for the electrical resistance (ohms) of
the “Resistor” parts produced on two different machines using a 2-sample t-Test. Are the process
means for resistance the same for both machines?
c) "Batch 01", "Batch 02", "Batch 03", and "Batch 04" columns: Compare the fill volumes (mL) of
bottles filled on the same equipment in 4 batches using different operational settings. Use the One-
way ANOVA tool on the Stat menu. Are all process means the same for the 4 batches analyzed? If
not, which means are different?
Hint: Click on the “Comparisons” button in the ANOVA dialog box and select the “Tukey” checkbox.
2. "NonNormal Analysis" sheet:
a) "Impurity content" column: Determine if the data from 30 batches that were produced after
changing a raw material in the process indicates that the median impurity levels in the product have
decreased from the historical average of 0.35%.
Hint: use “Stat>Nonparametrics>1-sample sign” test.
b) "Cases per day" and "SOP Change" columns: Is there an improvement in the total number of cases
manufactured per day after an SOP Change in the operation of Line 5 Case Packer?
Hint: use the “Stat>Nonparametrics >Kruskal-Wallis” Test.
.
Page
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, Week 9 Problem Set Name: Nicolas Ipeker
Homework # 9 Report Date: 10/31/2021
2. DATA AND ANALYSIS
Problem 1:
a) "Tablet Weight" column: The sample data represents the weights of tablets from an experimental
batch produced after a process change. Did the Historical Process Average for the tablet weight
of 150 mg change after the process change? Explain.
No, the process average was not maintained. The new average is 148.5 mg. A histogram was
created of the data, and this is the new mean of the sample which can be seen below.
Page
This study source was downloaded by 100000850872992 from CourseHero.com 2 of 7 10:30:08 GMT -05:00
on 04-10-2023
https://www.coursehero.com/file/117453095/Week-9-Problem-Set-Report-Nicolas-Ipekerpdf/
Homework # 9 Report Date: 10/31/2021
1. ASSIGNMENT / PROBLEM
1. "Comparison tests" sheet:
a) "Tablet Weight" column: The sample data represents the weights of tablets from an experimental
batch produced after a process change. Did the Historical Process Average for the tablet weight of
150 mg change after the process change? Explain.
b) "Machine-1" and "Machine-2" columns: Compare the data for the electrical resistance (ohms) of
the “Resistor” parts produced on two different machines using a 2-sample t-Test. Are the process
means for resistance the same for both machines?
c) "Batch 01", "Batch 02", "Batch 03", and "Batch 04" columns: Compare the fill volumes (mL) of
bottles filled on the same equipment in 4 batches using different operational settings. Use the One-
way ANOVA tool on the Stat menu. Are all process means the same for the 4 batches analyzed? If
not, which means are different?
Hint: Click on the “Comparisons” button in the ANOVA dialog box and select the “Tukey” checkbox.
2. "NonNormal Analysis" sheet:
a) "Impurity content" column: Determine if the data from 30 batches that were produced after
changing a raw material in the process indicates that the median impurity levels in the product have
decreased from the historical average of 0.35%.
Hint: use “Stat>Nonparametrics>1-sample sign” test.
b) "Cases per day" and "SOP Change" columns: Is there an improvement in the total number of cases
manufactured per day after an SOP Change in the operation of Line 5 Case Packer?
Hint: use the “Stat>Nonparametrics >Kruskal-Wallis” Test.
.
Page
This study source was downloaded by 100000850872992 from CourseHero.com 1 of 7 10:30:08 GMT -05:00
on 04-10-2023
https://www.coursehero.com/file/117453095/Week-9-Problem-Set-Report-Nicolas-Ipekerpdf/
, Week 9 Problem Set Name: Nicolas Ipeker
Homework # 9 Report Date: 10/31/2021
2. DATA AND ANALYSIS
Problem 1:
a) "Tablet Weight" column: The sample data represents the weights of tablets from an experimental
batch produced after a process change. Did the Historical Process Average for the tablet weight
of 150 mg change after the process change? Explain.
No, the process average was not maintained. The new average is 148.5 mg. A histogram was
created of the data, and this is the new mean of the sample which can be seen below.
Page
This study source was downloaded by 100000850872992 from CourseHero.com 2 of 7 10:30:08 GMT -05:00
on 04-10-2023
https://www.coursehero.com/file/117453095/Week-9-Problem-Set-Report-Nicolas-Ipekerpdf/
