STAT 324 Week 3 Quiz

Week 3 Quiz

Questions

Question 1 Equipment Status (Notes 3)

(b) Good or from Uchoset

(d) Fair given Gimery

(f) Testing independence

Complete: P(Murgh) = _____

Complete: P(Perfect) = _____

Complete: P(Murgh AND Perfect) = _____

Question 2 Disease Status and Mouse Group

Question 3 Reasonable Independence Assumptions

(a) Age and class standing

(b) Seed germination

Question 4 Emergency Generators

(a) Exactly two failures

(b) Interpreting a complement

Question 5 Weld Failures (Notes 4)

(c) At least one weld-metal failure

(i) Base-metal failures

Question 6 Weekly Recalibrations

(a) Expected value

(b) Interpretation

(c) Variance

Question 7 Pens Without Replacement

(a) Let X count the defective pens selected. X is a random variable.

(b) For each selected pen, “defective” can be called success and “working” failure because we are interested in defective pens.

(c) X is well approximated by Binomial(n = 2, π = 2/5).

(d) If the first pen is replaced before the second draw, X is well approximated by Binomial(n = 2, π = 2/5).

(e) Larger population

Question 8 Ferry Empty Spaces (Notes 4)