Question

It is generally believed that only 7% of the population has type O-negative blood (the universal donor). A blood bank is expecting 1000 donors at its upcoming drive. Use the empirical rule (68%-95%-99.7% Rule) to determine what proportion of O-negative donors you might expect to see in the 1000 donors (I'm not looking for the number of O-negative donors, just the proportion). Assume conditions are met!  No need to draw the model, though if you find it easier to do so you may draw it by hand and attach a picture of your model using the picture button. Feel free to download the picture below to add your values to, then submit your updated screen shot. You can also choose to attach your StatCrunch output (I show you how to use the Empirical Model in the videos this week). Be sure that you show any associated work with the equation editor.

Empirical Model

Answer 1