The drying times of a certain type of new paint are known to follow normal distribution with mean

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answerhappygod
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The drying times of a certain type of new paint are known to follow normal distribution with mean

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The drying times of a certain type of new paint are known to follow normal distribution with mean pi = 75 mins and standard deviation o = 9 mins. Chemists have proposed a new additive to shorten the drying time. It is believed that with this new addition, the drying times are still normally distributed with the same variance but with a smaller mean parameter p. One is therefore interested in testing Ho : #1 = 75 versus H : u

The Drying Times Of A Certain Type Of New Paint Are Known To Follow Normal Distribution 1
The Drying Times Of A Certain Type Of New Paint Are Known To Follow Normal Distribution 1 (124.08 KiB) Viewed 388 times
The Drying Times Of A Certain Type Of New Paint Are Known To Follow Normal Distribution 2
The Drying Times Of A Certain Type Of New Paint Are Known To Follow Normal Distribution 2 (122.94 KiB) Viewed 388 times
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