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Monday, March 7, 2011

MONDAY HW!

A lil' Type I and Type II Error practice....we'll get into a few additional ideas on Wednesday (and maybe spill over into Thursday). Remember, on Friday morning we'll have a test to begin our session! Part FR, part MC. Tomorrow in class we'll grade our vocab tests.

There will be a test review after school Thursday.

Monday HW (checked Wed):
Page 492: 11a-d, 12a-d, 13, 19a-d

In regard to your "testing for disease" homework question, here are the answers:
Type I: the patient is actually ok, but our test suggests they have cancer (false positive)
Type II: the patient does in fact have cancer, but our medical tests suggest they're ok (False negative)
Which is worse? In my opinion, a Type II Error is clearly worse, as this individual will now have a potentially fatal disease going untreated. With a Type I Error, although this person may be emotionally stressed/devastated, his/her physical health will not be threatened.

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