The book used is Martin S Roden Analog and Digital Communica

The book used is Martin S. Roden, Analog and Digital Communication Systems, Fifth Edition.

If you can not do all of them just do what you can please.

Solution

1.19 probability of rain prediction = 0.1435/ .1435 + .1435

= 1/2

= probality of no rain prediction = 0.5

H = 4.614 bit/letter

then L will be 5.145 bit lettr