Question: 22 Le Y = death rate and X = average age of residents. measured for each county in Mas- sachusetts and in Florida. Draw a

22 Le Y = death rate and X = average age of residents. measured for each county in Mas- sachusetts and in Florida. Draw a hypothetical scatter diagrain, identifying points for each state, when

a) The mean death rate is higher in Florida than in Massachusetts when X is ignored, but lower when it is controlled.

b) The mean death rate is higher in Florida than in Massachusetts both when X is ignored and when it is controlled.

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