ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: (a) True
Answer:
(b) False (b) False
Q: The median is not sensitive to changes in extreme values within a data set.
Answer:
(a) True
(b) False (a) True
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Pepsi given that they are in the
middle category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.6057398 (b) 0.9476146 (c) 0.2775405 (d) 0.4791667 (e) 0.3105672 (d)
0.4791667
,ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Coke?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.6381445 (b) 0.2614938 (c) 0.8143454 (d) 0.7843953 (e) 0.4872299 (e)
0.4872299
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Coke and that they are in the high
category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.0840095 (b) 0.1532417 (c) 0.0320637 (d) 0.6217445 (e) 0.4497822 (b)
0.1532417
,ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Pepsi or that they are in the low
category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.5610232 (b) 0.9518919 (c) 0.6502947 (d) 0.4760768 (e) 0.8501211 (c)
0.6502947
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone is in the low or middle category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.6483301 (b) 0.7486675 (c) 0.4493406 (d) 0.4759556 (e) 0.5131024 (a)
0.6483301
, ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: A company gets 27% of its input (raw material) from company Simpat and 73%
from a company called Amig. In the past the company observes that 7% of
Simpat's inputs are defective and 10% of Amig's inputs are defective. An input
drawn at random is found to be defective. What is the probability the input came
from Simpat?
Answer:
(a) 0.2241676 (b) 0.2817519 (c) 0.1850925 (d) 0.6028292 (e) 0.2056583 (e)
0.2056583
Q: What is the range for the median salary?
Answer:
NJ Tech 65900 U Wisconsin 54200 U Illinois 57600 Purdue 55000 U Iowa 50200 U
Virginia 60700 15700
Q: What is the mean for the median salary?
Answer:
NJ Tech 65900 U Wisconsin 54200 U Illinois 57600 Purdue 55000 U Iowa 50200
Update
Q: (a) True
Answer:
(b) False (b) False
Q: The median is not sensitive to changes in extreme values within a data set.
Answer:
(a) True
(b) False (a) True
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Pepsi given that they are in the
middle category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.6057398 (b) 0.9476146 (c) 0.2775405 (d) 0.4791667 (e) 0.3105672 (d)
0.4791667
,ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Coke?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.6381445 (b) 0.2614938 (c) 0.8143454 (d) 0.7843953 (e) 0.4872299 (e)
0.4872299
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Coke and that they are in the high
category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.0840095 (b) 0.1532417 (c) 0.0320637 (d) 0.6217445 (e) 0.4497822 (b)
0.1532417
,ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone prefers Pepsi or that they are in the low
category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.5610232 (b) 0.9518919 (c) 0.6502947 (d) 0.4760768 (e) 0.8501211 (c)
0.6502947
Q: The table here shows beverage preferences by customer category. What is the
empirical probability that someone is in the low or middle category?
Answer:
category preference low middle high coke 70 100 78 Pepsi 68 92 101 Total 138 192
179 (a) 0.6483301 (b) 0.7486675 (c) 0.4493406 (d) 0.4759556 (e) 0.5131024 (a)
0.6483301
, ECN 221 Questions and Answers with Verified Solutions | Latest 2026
Update
Q: A company gets 27% of its input (raw material) from company Simpat and 73%
from a company called Amig. In the past the company observes that 7% of
Simpat's inputs are defective and 10% of Amig's inputs are defective. An input
drawn at random is found to be defective. What is the probability the input came
from Simpat?
Answer:
(a) 0.2241676 (b) 0.2817519 (c) 0.1850925 (d) 0.6028292 (e) 0.2056583 (e)
0.2056583
Q: What is the range for the median salary?
Answer:
NJ Tech 65900 U Wisconsin 54200 U Illinois 57600 Purdue 55000 U Iowa 50200 U
Virginia 60700 15700
Q: What is the mean for the median salary?
Answer:
NJ Tech 65900 U Wisconsin 54200 U Illinois 57600 Purdue 55000 U Iowa 50200
