﻿ River Bottom Fire Department Is evaluating their response times in order to determine whether a new fire station is needed. Samples were taken for 30 random days from 6 stations. These data can be fou - Ray writers

# River Bottom Fire Department Is evaluating their response times in order to determine whether a new fire station is needed. Samples were taken for 30 random days from 6 stations. These data can be fou

River Bottom Fire Department Is evaluating their response times in order to determine whether a new fire station is needed. Samples were taken for 30 random days from 6 stations. These data can be found in the worksheet Pro 07-01 in the ch07 data.xlsx file.
a. using Microsoft excel or similar software with statistical capability, construct a histogram for these 180 individual readings
b. construct a run chart for the sample means.
c. Interpret what the data show. Does the process appear to be in control?
Problem 7-01
River Bottom Fire Station
Sample
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
3.81 4.08 4.19 3.88 4.15 4.95 4.01 4.85 4.24 4.99 4.07 4.71 3.91 4.60 4.57
3.93 3.82 4.30 4.16 4.93 4.12 4.89 4.05 4.87 4.16 4.88 3.98 4.64 3.94 4.06
3.89 3.98 4.17 4.12 4.86 4.08 4.87 4.08 5.33 4.16 4.89 4.04 4.68 4.00 3.95
3.91 4.21 4.23 4.24 4.98 4.23 4.98 3.98 4.83 4.18 4.86 3.94 4.57 3.85 3.96
4.08 4.00 4.12 4.17 4.58 4.12 4.89 4.07 4.93 4.29 4.93 3.94 4.57 3.86 3.98
4.01 4.06 4.15 4.17 4.97 4.13 4.88 3.95 4.83 4.37 4.97 3.90 4.52 3.88 3.95
Sample
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
4.19 4.08 4.00 4.16 5.03 4.16 4.92 4.09 4.95 4.11 4.80 3.95 4.59 3.90 4.58
4.19 4.08 4.04 4.14 4.89 4.14 4.90 4.12 4.93 4.16 4.90 3.90 4.57 3.87 4.58
4.03 4.21 4.06 4.19 4.88 4.19 4.91 4.10 4.82 3.93 4.63 3.93 4.59 3.88 4.64
4.06 4.22 4.10 4.17 4.92 4.06 4.84 4.14 4.89 4.03 4.68 4.01 4.72 4.00 4.66
3.88 4.18 4.01 4.02 4.85 4.18 4.98 4.14 4.85 4.01 4.63 4.10 4.80 4.01 4.66
4.00 4.10 4.13 4.31 5.13 4.31 5.09 4.27 5.03 4.14 4.76 4.01 4.65 4.02 4.75

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