Agroup of engineers has just conducted an experimental trial on a shoe
designed to people suffering from a painful foot disorder. during the trial,
the shoe proved effective for only 5% of the test subjects. what should the
engineers do next?
a. use a cheaper material to make the shoe more profitable.
o
b. find out if the sole of the shoe can be redesigned
o
c. begin to market this new shoe to patients and doctors.
d. conduct the test again.
o
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What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m

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