Question

#5a). The mean score of a college entrance test is 500; the standard deviation is 75. The scores are normally distributed. What percent of the students scored below 320?

#5b). In a recent survey about appliance ownership, 58.3% of the respondents indicated that they own Maytag appliances, while 23.9% indicated they own both Maytag and GE appliances and 70.7% said they own at least one of the two appliances. Define the events as M = Owning a Maytag appliance G = Owning a GE appliance

#5bi). Given that a respondent owns a Maytag appliance, what is the probability that the respondent also owns a GE appliance?

#5bii). Are the two events "M" and "G" independent? Explain, using probabilities.

Answer 1