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The widths of the heads of fireworks on Dragon Island M= 91mm and standard deviation=23mm and...

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Statistics

The widths of the heads of fireworks on Dragon Island M= 91mmand standard deviation=23mm and have a normal distribution.

a. By law, fireworms in the smallest 10th percentile must bereleased if captured. Find the head width that represents the 10thpercentile.

b. It appears only fireworks with head widths of 102mm to 119mmmake reliable circus performers. What percentage of fireworks doesthis represent ?

c. Offers a reward for the largest 10% of fireworks on theisland. What head width represents the 90th percentile ?

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