Stats And Mechanics Flashcards

(9 cards)

1
Q

mutually exclusive events

A

P(A or B) = P(A) + P(B)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Independent events

A

P(A and B) = P(A) x P(B)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

acceleration

A

a= (v-u)/t

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

velocity

A
vv = uu + 2as
v = u + at
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

displacement

A
s = (u+v/2)t
s = ut + 1/2att
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

P(A or B or both)

A

P(A) + P(B) - P(A and B)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly