help needed

  1. A

    Probability without z-score?

    Estimate mean of male students on campus. Standard deviation of the heights of young men is about 2.8 inches. Suppose (unknown to you) the mean height of all male students is 70 inches. a) If you choose one student at random, what is the probability that he is between 69 and 71 inches tall...
  2. G

    i need help with this please!!!!

    Angus reid conducted a survey of adult canadians finding that over all 56% supported the legalization of marijuana. the percenatage of support was different among voters for the three major parties (in the table below). for instance 17% of people both supported legalization of marijuana and also...