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My Notes 3. -14 points DevoreStat9 5.E.0s0. Ask Your Teacher Let X denote the courtship time for a randomly selected female-m
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Answer #1

a)
option D)
this happens because sd is very large and 120 - 3* 110 < 0

b)


Xbar follow normal distribution with mean = 120 and

sd =sigma/sqrt(n) = 110/sqrt(70)

=

13.147515

P(115 < Xbar < 135)

= 0.5212

c)

P(Xbar > 150)

= 0.9887

d)

option A) No

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