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Old November 2nd, 2009, 02:27 PM
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Default distribution sample median

up until the early 1900s, peeps who colored their hair used only herbs and dyes today hair coloring products contain two main ingredients hydrogen peroxide and ammonia. the makers of a clairol hair color product claim that the mean amount of hydrogen peroxide in each bottle is .10 mg/m^3. assume that the standard deviation is .05 mg/m^3 a random sample of these hair-color products was obtained, and the amount of hydrogen peroxide in each bottle was measured. the resulting data in mg/m^3 are:

0.14
0.14
0.11
0.09
0.15
0.06
0.13
0.13
0.19
0.16
0.16
0.09
0.13
0.09
0.23
0.09
0.12
0.14
0.13
0.02
0.06
0.22
0.10
0.12
0.06
0.10
0.13
0.18
0.12
0.21

i'm not sure how to calculate this with all that data.
also, is there any evidence that suggests the manufacturer is including too much hydrogen peroxide in the product?

thanks.
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