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anonymous
 5 years ago
The heights of a certain species of plant are normally distributed, with mean 23 cm and standard deviation 1 cm. What is the probability that a plant chosen at random will be will be between 20.5 and 25.5 cm tall?
anonymous
 5 years ago
The heights of a certain species of plant are normally distributed, with mean 23 cm and standard deviation 1 cm. What is the probability that a plant chosen at random will be will be between 20.5 and 25.5 cm tall?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do you know about converting to standard normal and using z score?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok well the formula to convert to a value of z: \[(X\mu)/\sigma\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so you would have (25.523)/1 and (20.523)/1 2.5<z<2.5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then you can look up the probability on a standard normal chart. Try that and let me know if you need help
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