Calculating Chemical Shifts for OCH3 Benzene Ring

[MusicMonkey]

Can someone please explain to me how to calculate chemical shifts only given a few constants? For example the compound is as follows:

a benzene ring except in positions 1 and 4 there is an OCH3 group.

given only the values of:
alkane CH3 = 0.9
alkane CH2 = 1.3
alkane CH = 1.4

O=C-CH3 --> 2.1
-C(triple bond)C-H -->2.5
R-CH2-X --> 3-4
>C=C<H --> 5-6
>C=C<CH3 --> 1.7
Ph-H --> 7.2
Ph-CH3 --> 2.3
R-CHO --> 9-10
R-COOH --> 10-12
R-OH --> 2-5
Ar-OH --> 4-7
R-NH2 --> 1.5-4

The final answer is supposed to be for the H's delta 7.2 and for the H's attached to CH3O delta 3.6. Please help I don't understand how to do any of the chemical shift calculations at all! Thank you in advance.

 

[chem_tr]

It is somewhat complex, but we know that the compound includes phenyl H (Ph-H), and Ph-X-CH₃. Therefore, the entries R-CH₂X and Ph-H would be useful for you.