• anonymous
The heights of a certain species of plant are normally distributed, with mean 20 cm and standard deviation 2cm. What is the probabilty that a plant chosen at random will be between 19 & 21 cm tall?
  • Stacey Warren - Expert
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
  • jamiebookeater
I got my questions answered at in under 10 minutes. Go to now for free help!
  • anonymous
There is a 38.29% chance of the plant being 19 to 21 cm tall. This is found using the Normal CDF function on a TI89 in the stats/list editor. If use choose F5->Normal CDF->and then enter "Lower Value = 19", "Upper Value = 21", mean = "20" and S.D.="2" you will get this result. Otherwise you need to use a z-table.

Looking for something else?

Not the answer you are looking for? Search for more explanations.