A sample of 2000 households is surveyed for their purchase behavior for mobile phones. Table 1:   ACTUALLY PURCHASED   PLANNED TO PURCHASE Yes No Total Yes 800 300 1100   No 100 800 900   Total 900 1100 2000     What is the sample space? Give examples of simple events and joint events. What is the simple probability of the event ‘planned to purchase’? Using this, show how marginal probability is related to simple probability.

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