2026 FULL QUESTIONS AND SOLUTIONS
◉ Probability Theory.
Answer: PROBABILITY:
Can predict future events
◉ Example of Probability
p= 0.1=10% 1 of 10 break
p=0.95=95% 95 of 100 break.
Answer: Drinking glass example
◉ Why isn't it 100% Probability
in drinking glass example..
Answer: we didn't measure any of other variables to see why glasses
didn't break, that's why it's not 100%
-could have purchased at different places, concrete could have been
warmer or temperature of glass could have mattered.
◉ Probability Example.
, Answer: What will probability of your grade be if you take a test on
something you know nothing about...like astro-physics. ANSWER
IS...... (see next slide)
◉ Probability Answer to Astro-physics test of which you know
nothing is...
RANDOM GUESSING = .33 or 33%- knowing nothing.
Answer: .33 or 33% due to mathematical theory (random events
occur with mathematical predictablily
◉ Friend takes same exam in Astro-physics.
Answer: and scores .44 or 44% = (VERY UNLIKELY) must have some
knowledge, wasn't guessing on all of the answers.
◉ Ex: pt's anxiety relating to before surgery patients = anxious and
apprehension.
Answer: finding= 73% (.73) of pt's are less anxious after given
explanation than before explanation given
for some reason- other 27% still anxious
Findings= out of every 100 patients, 73 of them will be less anxious
after the intervention of pre-op explanation. ++++++ THAT IS
PREDICTABILITY OR AN EXAMPLE OF PROBABILITIES