Discussion:
Q: A company compared the performance of two temperature instruments: one coupled to a process computer and the other used for visual control. Ideally, these two instruments should agree. The following data are the two temperatures over a five day period:
|
Day
|
1
|
2
|
3
|
4
|
5
|
|
Temp1
|
84.6
|
84.5
|
84.4
|
84.6
|
84.3
|
|
Temp 2
|
85.2
|
85.1
|
84.9
|
85.3
|
85.0
|
a. Conduct the most appropriate hypothesis test using a 0.05 significance level to determine if there is a statistically significant difference between the reading of both instruments,
b. Construct a 95% confidence interval for the true mean difference in temperature readings.