Question: Determine an appropriate interval width for a random sample of 370 observations that fall between and include each of the following: a. 30 to 75

Determine an appropriate interval width for a random sample of 370 observations that fall between and include each of the following:
a. 30 to 75 

b. 40 to 200
c. 50 to 240 

d. 180 to 400

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