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almonds sell for $4.50 per pound, and granola sells for $6.75 per pound. terri bought some almonds and some granola. the total weight was 2.5 pounds and the cost was $15.75.

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?