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Flashcards in final review Deck (18):
1

Sample space

The collection of all possible outcomes of a chance experiment

2

Event

Any collection of outcomes from the sample space of a chance experiment

3

Not A

The event that consists of all experimental outcomes that are not in event A

4

A or B (union)

The event that consists of all experimental outcomes that are in at least one of the two events, A U B

5

A and B (intersection)

The event that consists of all experimental outcomes that are in both of the events A and B.

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Mutually exclusive events

Events that have no outcomes in common

7

Normal distribution

A continuous probability distribution that had a bell-shaped density curve

8

Z-score

How many standard deviations above or below a value is.

9

Statistic

Any quantity whose valu is computed from sample data

10

Sampling distribution

The probability distribution of a statistic.

11

Point estimate

A single number, based on sample data, that represents a plausible value of a population characteristic

12

Confidence interval

An interval computed from sample data that provides a range of plausible values for a population characteristic

13

Hypothesis

A claim about the value of a population characteristic

14

Null hypothesis

The hypothesis initially assumed to be true

15

Alternative hypothesis

A hypothesis that specifies a claim that is contradictory to the null.

16

Type I error

Rejecting the null when it is true.

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Type II error

No rejdcting the null when it is false

18

Power of the test

The probability of rejecting the null hypothesis