% Gold by Weight % Lead by Weight 0.22 0.41 0.24 0.31…

% Gold by Weight % Lead by Weight 0.22 0.41 0.24 0.31 0.20 0.89 0.23 0.62 0.18 0.41 0.15 0.88 0.17 0.67 0.17 0.59 The data above were gathered on 8 coins known to have been produced by a mint in Rome.  Gold and lead have been identified as possible factors in identifying the coins as having been minted in Rome.  If a Roman coin is selected at random, and its gold content is 0.20% by weight, calculate the predicted lead content. 

According to internal testing done by the HardCore Apple Com…

According to internal testing done by the HardCore Apple Company, the mean firmness of their apples, as measured on the Mohs hardness scale is 7.0 with a standard deviation of 0.3.  What is the standard deviation of the sampling distribution for a sample of size n = 16?

% Gold by Weight % Lead by Weight 0.22 0.41 0.24 0.31…

% Gold by Weight % Lead by Weight 0.22 0.41 0.24 0.31 0.20 0.89 0.23 0.62 0.18 0.41 0.15 0.88 0.17 0.67 0.17 0.59 The data above were gathered on 8 coins known to have been produced by a mint in Rome.  Gold and lead have been identified as possible factors in identifying the coins as having been minted in Rome.  Calculate the linear correlation r.