SOLUTION: Suppose x has a distribution with μ = 30 and σ = 25.
(a) If a random sample of size n = 39 is drawn, find μx, σ x and P(30 ≤ x ≤ 32). (Round σ
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Question 1113411: Suppose x has a distribution with μ = 30 and σ = 25.
(a) If a random sample of size n = 39 is drawn, find μx, σ x and P(30 ≤ x ≤ 32). (Round σx to two decimal places and the probability to four decimal places.)
I do not know how to solve for P(30≤ x ≤ 32), an explanation would be awesome!
Cheers
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
u(x) = 30
:
sigma(x) = 25/square root(39) = 4.0032
:
P ( 30≤ x ≤ 32 ) = P ( x ≤ 32) - P ( x ≤ 30 )
:
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