Page 7 - Midterm Exam Questions

26.04.2020 M dterm Make-up

12. F nd a value of the standard normal random var able z , call t z 0 , such that the follow ng probab l t es are sat sf ed.

a. P(z ≤ z 0 ) = 0.0156 e. P( − z ≤ z 0) 0.≤ = 2872
0
z
z
b. P( − z ≤ ≤ z 0 ) 0.= 90 f. P( − 2 < < z 0 ) 0.= 9587
0
c. P( − z ≤ ≤ z 0 ) 0.= 99 g. P(z < z 0 ) 0.5=
z
0
z
d. P( − z ≤ ≤ z 0 ) 0.= 8938 h. P(z ≤ z 0 ) = 0.0053
0
a. z = (Round to two dec mal places as needed.)
0
b. z = (Round to two dec mal places as needed.)
0
c. z = (Round to two dec mal places as needed.)
0

d. z = (Round to two dec mal places as needed.)
0
e. z = (Round to two dec mal places as needed.)
0
f. z = (Round to two dec mal places as needed.)
0

g. z = (Round to two dec mal places as needed.)
0
h. z = (Round to two dec mal places as needed.)
0

13. The number of road construct on projects that take place at any one t me n a certa n c ty follows a Po sson d str but on w th a mean of . F nd the probab l ty 3
that more than four road construct on projects are currently tak ng place n the c ty.

A. 0.647232
B. 0.352768
C. 0.184737
D. 0.815263

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