Statistics

BUS600 M IDTERIV|; trtAM E : ID:

*SUBMIT YOUR DETAILED ANS]I4-V-F.85 BY 12:OO, FRIDAY, LA/1"T/hOL}.

NO EXCEPTION. #6 thru #,9, #lt thru #r.3 are Ss.oiilt_ssrch and a_tlqthers are 2 points each

for data; 2,5,8,25,6,17, 1,j",27, 14.,l-8, 6, !3,12., j.0, 30, 2g,7, L6,6,5.

B. FIND #4. MEAN =

#6. VARIANCE =

, #5. IVIIDIAN =

for the follornring data.

X frequencv

360 2s 480 5s 600 45 7OO qq

c. RANDoM VARTABLE X has a i\orrnar Di:;tribution, N(70, 25).

#7. P(X < 65) = _---__* #8. P(60<X<'/51-=

D. RANDoM VARTABLE y has a Birromiar Distribur icn, B(g, c).5).

#9. P(Y < 5) =

E. RANDoM VARTABLE X has a Binonriar Distribution, 8(64, 0.5).

#10. Standard deviation of X =

#11. Use Normal approximation, p(X > 24) =

F. Let P(A) = 0.6, P(B) = 0.4, and p(A or B) = 0.g8, then p(A and B) = G. #1,2, From a student,s, t_table,

find m such that p(t < m) -- 0.05 with sampre size is g. m - H. For events A, B, c, p(A) = 0,3, p(B) = A.4, i:ncf p(c) = 0.5, then

#13, What is the range of p(A or B or C)?le, p(A or B or Ci l' For some distribution(s), lt is possible that Mean, Mode, and Median are all same.

#1"4. True , False