1. One study compared forest plots in Borneo that had never been logged with similar plots that had been logged 8 years earlier. Loggers were unaware that the effects of logging would be assessed. Here are the data on the number of tree species in 12 randomly selected unlogged plots and 9 randomly selected logged plots: Unlogged 22 18 22 Logged 17 4 18 20 15 21 13 13 19 13 19 15 14 18 15 15 10 12 Does logging significantly reduce the mean number of species in a plot after 8 years?

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Please answer the following including the conditions that need to be met and how to compute the answer using a graphing calculator. Thank you. 

1. One study compared forest plots in Borneo that had never been logged with similar
plots that had been logged 8 years earlier. Loggers were unaware that the effects of
logging would be assessed. Here are the data on the number of tree species in 12
randomly selected unlogged plots and 9 randomly selected logged plots:
Unlogged 22 18 22
Logged
17 4
18
20 15 21 13 13 19 13 19 15
14 18 15 15 10 12
Does logging significantly reduce the mean number of species in a plot after 8 years?
Transcribed Image Text:1. One study compared forest plots in Borneo that had never been logged with similar plots that had been logged 8 years earlier. Loggers were unaware that the effects of logging would be assessed. Here are the data on the number of tree species in 12 randomly selected unlogged plots and 9 randomly selected logged plots: Unlogged 22 18 22 Logged 17 4 18 20 15 21 13 13 19 13 19 15 14 18 15 15 10 12 Does logging significantly reduce the mean number of species in a plot after 8 years?
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