Probability

Question 1

Rolling a fair dice is what type of probability?

Answer 1

Equally likely probability

Question 2

Tossing a coin is what type of probability?

Answer 2

Relative frequency

Question 3

Mutually exclusive?

Answer 3

Cannot happen at the same time

Question 4

What does Independent?

Answer 4

Can happen at the same time

Question 5

P(A or B)

Answer 5

P(A) + P(B)
For mutually exclusive things

Question 6

P(A and B)

Answer 6

P(A) x P(B)
For independent things

Question 7

What is the probability that at least one person is effected?

Answer 7

1 - P(none)

Question 8

What is normal distribution?

Answer 8

It is probability density function

Question 9

What is normal distribution dictated by?

Answer 9

Mean and standard deviation

Question 10

What is the null hypothesis

Answer 10

H0
The assumption that there is no difference between the two group

Question 11

What is the alternative hypothesis?

Answer 11

H1
A hypothesis that contradicts the null by suggesting that there is a difference between the groups

Question 12

What is the P value

Answer 12

The probability of observing a test statistic as extreme or more extreme than that observed in your sample in hypothetical repetitions of the study, assuming the null hypothesis is true

Question 13

What is a type l error?

Answer 13

This is when there is a false positive and the null is rejected when it’s actually true

Question 14

What is a type ll error

Answer 14

This is a false negative, where the null is not rejected but it is false

Question 15

What is a Chi-square test used for?

Answer 15

To compare categorical outcomes or proportions between two independent groups