Mathematics, 20.11.2019 21:31 Pinkywoo
From generation to generation, the average age when smokers first start to smoke varies. however, the standard deviation of that age remains constant at around 2.1 years. a survey of 39 smokers of this generation was done to see if the average starting age is at least 19. the sample average was 18.2 with a sample standard deviation of 1.3. do the data support the claim at the 5% level?
Answers: 2
Mathematics, 21.06.2019 19:00, aylinkayla
In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.
Answers: 1
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