A local restaurant is planning a study on demand for meals over holiday weekends. In calculating the

Question:

A local restaurant is planning a study on demand for meals over holiday weekends. In calculating the desired sample size for the study, the restaurant's researcher decides to use a rule-of-thumb calculation for estimating the population dispersion. If the range of meals in the study is 0 to 30, what standard deviation does the rule-of-thumb method produce