Two independent experiments are run in which two different
types of paint are compared. Eighteen specimens are painted using type A, and
the drying time, in hours, is recorded for each. The same is done with type B.
The population standard deviations are both known to be 1.0.

Assuming that the mean drying time is equal for the two types of paint, find
P(X ̄A −X ̄B > 1.0), where X ̄A and X ̄B are average drying times for samples of size
nA = nB = 18.

Question

Two independent experiments are run in which two different
types of paint are compared. Eighteen specimens are painted using type A, and
the drying time, in hours, is recorded for each. The same is done with type B.
The population standard deviations are both known to be 1.0.

Assuming that the mean drying time is equal for the two types of paint, find
P(X ̄A −X ̄B &gt; 1.0), where X ̄A and X ̄B are average drying times for samples of size
nA = nB = 18.

okinagatarashimiyeon · Answer

Answer:Probability na 1.0 is about 0.00135 or 0.135%.

Answer (1)

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