Stats And Mechanics Flashcards
(9 cards)
1
Q
mutually exclusive events
A
P(A or B) = P(A) + P(B)
2
Q
Independent events
A
P(A and B) = P(A) x P(B)
3
Q
acceleration
A
a= (v-u)/t
4
Q
velocity
A
vv = uu + 2as v = u + at
5
Q
displacement
A
s = (u+v/2)t s = ut + 1/2att
6
Q
P(A or B or both)
A
P(A) + P(B) - P(A and B)
7
Q
You can model X with a binomial distribution, B(n,p) if:
A
- there are a fixed number of trials, n
- there are two possible outcomes (success and failure)
- there is a fixed probability of success, p
- the trials are independent of each other
8
Q
What is a critical region?
A
A critical region is a region of the probability distribution which, if the test statistic falls within it, would cause you to reject the null hypothesis.
9
Q
What is the actual significance level?
A
The actual significance level of a hypothesis test is the probability of incorrectly rejecting the null hypothesis.