The main process change that can be detected with a process control chart is:
A) the process average has shifted up or down from normal.
B) the process average is trending up or down from normal.
C) the process is behaving in such a manner that the existing variation is not random in nature.
D) All of the above
Question 2
It is believed that number of people who attend a Mardi Gras parade each year depends on the temperature that day.
A regression has been conducted on a sample of years where the temperature ranged from 28 to 64 degrees and the number of people attending ranged from 8400 to 14,600. The regression equation was found to be y = 2378 + 191x. Which of the following is true?A) The average change in parade attendance is an additional 2378 people per one-degree increase in temperature.
B) The average change in parade attendance is an additional 191 people per one-degree increase in temperature.
C) If the temperature is 75 degrees, we can expect that 16,703 people will attend.
D) If the temperature is 0 degrees this year, then we should expect 2378 people to attend.
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