Chapter 5
5.2: Large-Sample Confidence Intervals for Population Mean
Confidence Interval an interval that is constructed that is likely to cover the population mean
o
P( X z n X z n ) =
z the z-value
Chapter 3
3.1: Basic Ideas
Probability the study of randomness
Experiment a process that results in an outcome that cannot be predicted in advance with
certainty
Sample space the set of all possibl
Chapter 6: Hypothesis Tests for a Single Sample
6.1: Large-Sample Tests for a Population Mean
Hypothesis test produces a number between 0 and 1 that measures the degree of certainty that
the hypothes
Chapter 4
4.1: The Binomial Distribution
Bernoulli trial an experiment in which there are only two possible outcomes; one labeled
success, the other labeled failure
The probability of success is deno
Mean and Variance for Discrete Random Variables
Population mean the mean of a hypothetical sample that follows the
probability distribution perfectly
o x = xp(x)
Example: Toss a coin
x = xp(x)
x
Statistics the science of analyzing data
o The objective of statistics is to make inferences about a population based on the
information contained in a sample from that population and to provide an a
Ch. 4 Commonly Used Probability Distributions
Bernoulli Distribution:
A discrete RV has a Bernoulli distribution if
Binomial Distribution:
A discrete RV has a binomial distribution if all of the follo
Ch. 3 Probability
Base Definitions:
Experiment
Sample space
Event
Examples:
1. Pick a card from a standard deck of 52
2. Count the number of dropped calls in 20 randomly selected calls.
3. Record t