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VEN 125 FINAL EXAM (ACTUAL 2025/2026)
QUESTIONS WITH 100% VERIFIED CORRECT
ANSWERS UPDATE GRADED A+
Metameric match - (answers)objects with different spectral distributions look
alike under one light source but different under another
Mesopic vision - (answers)occurs at dawn or dusk and involves both rods and
cones
5 tastes - (answers)sweet, sour, salty, bitter, umami
Supertasters - (answers)have more papillae on the tongue, more taste buds, and
more trigeminal nerve endings
more sensitive to PTC & PROP, bitter, sweet, and salty
30 papillae sq cm vs 5
Type I Error - (answers)Alpha
Falsely reject Ho (false positive)
Type II Error - (answers)Beta
Falsely accept Ho (false negative)
Paired directional - (answers)Picking which sample is ____ (saltier, sweeter, etc.)
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p=.5 (one-tailed)
2 serving orders
Triangle - (answers)Picking the odd sample.
p=0.33 (one-tailed)
6 serving orders
Duo-Trio - (answers)Pick which is the same to a reference.
p= 0.5 (one-tailed)
Single reference = 2 serving orders
2 out of 5 test - (answers)3 cleaned and 2 spiked
P= 0.1
very fatiguing with wine
p = Probability that results could have occurred by chance alone
1‐p = Probability that a real difference was perceptible
paired preference test - (answers)which do you prefer? (consumer test)
p=0.5 (2-tailed test)
Rossler tables
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Types of sensory evaluation - (answers)Analytical sensory evaluation-Interested in
the WINE and its attributes
Consumer sensory evaluation-Interested in CONSUMERS reactions to the wine
Power - (answers)1-beta
Probability of finding a difference (if one exists)- Depends on alpha, # of
judgements, size of the difference between the samples, directionality
(one tailed has more power)
Z-test - (answers)Z=(X-np)-0.5/sqrt(npq)
n= # responses
p = probability of guessing right
q = 1-p
Duo‐trio test for new blend versus old - (answers)Results: p=0.059
use the new blend since the pair test did not reject the null but H2S IS detected by
some percentage of your consumers
Make the decision "CONSERVATIVELY"
Use more people (increase power)
Use higher Type I error level (e.g., decrease b, increase power)
Increase alpha level from p<0.05 to p<0.10
VEN 125 FINAL EXAM (ACTUAL 2025/2026)
QUESTIONS WITH 100% VERIFIED CORRECT
ANSWERS UPDATE GRADED A+
Metameric match - (answers)objects with different spectral distributions look
alike under one light source but different under another
Mesopic vision - (answers)occurs at dawn or dusk and involves both rods and
cones
5 tastes - (answers)sweet, sour, salty, bitter, umami
Supertasters - (answers)have more papillae on the tongue, more taste buds, and
more trigeminal nerve endings
more sensitive to PTC & PROP, bitter, sweet, and salty
30 papillae sq cm vs 5
Type I Error - (answers)Alpha
Falsely reject Ho (false positive)
Type II Error - (answers)Beta
Falsely accept Ho (false negative)
Paired directional - (answers)Picking which sample is ____ (saltier, sweeter, etc.)
,2|Page
p=.5 (one-tailed)
2 serving orders
Triangle - (answers)Picking the odd sample.
p=0.33 (one-tailed)
6 serving orders
Duo-Trio - (answers)Pick which is the same to a reference.
p= 0.5 (one-tailed)
Single reference = 2 serving orders
2 out of 5 test - (answers)3 cleaned and 2 spiked
P= 0.1
very fatiguing with wine
p = Probability that results could have occurred by chance alone
1‐p = Probability that a real difference was perceptible
paired preference test - (answers)which do you prefer? (consumer test)
p=0.5 (2-tailed test)
Rossler tables
, 3|Page
Types of sensory evaluation - (answers)Analytical sensory evaluation-Interested in
the WINE and its attributes
Consumer sensory evaluation-Interested in CONSUMERS reactions to the wine
Power - (answers)1-beta
Probability of finding a difference (if one exists)- Depends on alpha, # of
judgements, size of the difference between the samples, directionality
(one tailed has more power)
Z-test - (answers)Z=(X-np)-0.5/sqrt(npq)
n= # responses
p = probability of guessing right
q = 1-p
Duo‐trio test for new blend versus old - (answers)Results: p=0.059
use the new blend since the pair test did not reject the null but H2S IS detected by
some percentage of your consumers
Make the decision "CONSERVATIVELY"
Use more people (increase power)
Use higher Type I error level (e.g., decrease b, increase power)
Increase alpha level from p<0.05 to p<0.10
