Using a Box & Whisker Chart helped identify the 12 p.m. hour with having the longest lead time in delivering a sandwich to customers.

After observing the process during the 12 p.m. hour, you notice that the team is using a fourth toaster oven that is not used during the slower times of the day.

You decided to conduct a test between the toasters' temperatures to ensure each is heating the same, as delivering cold sandwiches is the top quality defect.

Use excel to answer the following questions.

Toaster 1	Toaster 2	Toaster 3	Toaster 4
97.2	103.5	98.9	63.5
101.7	101.7	99.3	60.8
100.1	96.0	98.5	64.3
99.5	99.6	99.3	72.0
100.4	99.5	102.5	69.0
102.0	101.7	102.4	62.9
100.1	100.3	101.1	72.1
102.9	102.1	99.3	66.7
101.7	101.3	97.2	68.2
97.3	99.1	100.5	64.4
100.8	97.2	100.7	65.2
98.1	101.2	96.1	68.4
103.0	100.5	100.4	65.9
102.1	98.8	100.3	68.5
100.3	98.5	98.3	59.3
101.1	99.7	98.8	69.2
98.6	103.0	100.2	68.9
101.2	96.7	98.7	63.3
99.3	103.6	99.0	67.7
100.1	103.1	101.4	63.1
102.0	100.1	101.1	64.8
102.6	95.6	97.4	64.9
98.9	102.4	97.4	66.8
100.1	102.5	100.3	65.3
100.7	98.5	100.2	69.9
100.3	103.3	101.2	67.2
101.2	102.2	99.1	66.3
103.0	99.3	100.2	68.2
99.7	103.2	99.5	67.6
100.2	99.6	100.4	71.1
99.2	99.6	98.9	68.1
102.3	99.7	98.6	71.9
98.9	100.9	101.3	66.3
101.0	101.8	96.1	67.5
97.5	99.3	98.0	61.6
102.5	99.5	100.8	63.9
100.8	98.9	101.4	61.5
99.3	97.4	101.1	62.9
100.5	99.1	102.8	62.6

1. What is your Null Hypothesis?

2. You decide to use the ANOVA analysis, as there are more than one mean you would like to compare. After running the tool in QI Macros, what is the P-Value from the analysis?

Will you reject or accept the Null Hypothesis?