question archive On average, the number of days it takes for a caterpillar to become a butterfly is 18 days with a standard deviation of 2

On average, the number of days it takes for a caterpillar to become a butterfly is 18 days with a standard deviation of 2

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On average, the number of days it takes for a caterpillar to become a butterfly is 18 days with a standard deviation of 2.5 days.

Fill in the values for the normal curve for the time to mature into a butterfly. From left to right, the values would be:     

Quantify, what is the chance that a caterpillar will turn into a butterfly in 16.125 days or less?  answer as a percentage without rounding your answer. 

At a butterfly sanctuary, there are a 10,000 caterpillars waiting to transform into butterflies. How many out of 10,000 would you expect to become a butterfly in 18.25 days or more? 

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Answer:

From left to right,

Let SD = standard deviations

the values will be (mean - 3SD), (mean - 2SD), (mean - SD), (mean), (mean + SD), (mean + 2SD), (mean + 3SD)

Need z-values and z-table for other 2

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https://drive.google.com/file/d/1oX86bpb3Vn-GT9Jw2XOu2yw7MPvgPng1/view?usp=sharing

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