In a survey done by the local Better Buy store, questions were asked of 300 households that actually purchased big-screen televisions.

In a survey done by the local Better Buy store, questions were asked of 300 households that actually purchased big-screen televisions. The table at left indicates the consumer's responses to whether the television purchased was a plasma screen and whether they also purchased a DVR in the past 12 months.Q-1a: What is the probability that a randomly selected big-screen television purchase in this sample is a purchase of a plasma-screen television?

In a survey done by the local Better Buy store, questions were asked of 300 households that actually purchased big­screen televisions. The table at left indicates the consumer's responses to...