STAT2040: INTERVAL ESTIMATION
Confidence interval is an interval estimate and provides the range of values that, with certain level of
confidence contains the population parameter of interest.
In order to construct the confidence interval
STAT2040: SAMPLING DISTRIBUTIONS
Population consists of all items of interest in a statistical problem.
Sample is a subset of the population.
Sample statistic is used to make inferences about the unknown population parameter.
Parameter is co
The continuous uniform distribution describes a random variable, defined on the interval
[a, b], that has an equally likely chance of assuming values within any subinterval of
[a, b] with the same length.
Which of the following is correct?
Which data scales of measurement are associated with
Nominal and ordinal
San Francisco 49ers linebacker Patrick Willis won the Defensive
Rookie of the Year Award in 2007 with a total of 174 tackles.
Tackles are measured on what kind of a
STAT2040: Steps to Hypothesis Testing
STEP 1: State your research question.
What do you want to prove? Do you want to disprove someone elses claim or do you have a new claim?
STEP 2: State your hypotheses.
II Hypothesis is ALWAYS about population paramete
Matt Kenseth won the 2012 Daytona 500, the most important race of the NASCAR
season. His win was no surprise because for the 2011 season he finished fourth in
the point standings with 2330 points, behind Tony Stewart (2403 points), Carl
Edwards (2403 poin