(Answered) 1 determine if this study is experimental or observational

Statistics

1. Determine if this study is experimental or observational: Researchers monitor the health of smokers and non-smokers.

2. Construct a grouped frequency distribution for the data given below:

92 93 86 81 85 81 86 88 89 93
83 92 81 93 92 85 93 82 95 86

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