Internet sites often ask for a secret phrase to recover lost passwrds. Jason encoded a secret phrase using matrix multiplication
. He multiplied the clear text code for each letter by the matrix:
The matrix representing the encoded text is:
Jason’s secret phrase is:
Clear text encoding:
Decoding a Message by Finding An Inverse
The matrix representing the encoded text is:
Jason’s secret phrase is:
Clear text encoding:
Decoding a Message by Finding An Inverse
2 answers:
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Answer:
(a) mean = 377.5ml. standard deviation = 4.33
(b) 0.333
(c) 384.25 ml
Step-by-step explanation:
(a)The mean:
The standard deviation:
(b)
(c)P(x > m) = 0.95
So the volumn of shampoo should be 384.25ml to exceed 95% of containers.