Two-Sample Tests What is a two-sample test? A?two-sample test?is used to?compare the means (μ1?&?μ2)?of?two?normally distributed?populations You use a?t-test?when the?population variances are u...
One-Sample z-tests What is a one-sample?z-test? A?one-sample?z-test?is used to?test the mean (μ)?of a?normally distributed?population You use a?z-test when the?population variance (σ2) is known Wha...
Chi-Squared GOF: Uniform What is a chi-squared goodness of fit test for a given distribution? What are the steps for a chi-squared goodness of fit test for a given distribution? Worked Example Chi-...
Chi-Squared Test for Independence What is a chi-squared test for independence? You will use a?contingency table This is a two-way table that shows the?observed frequencies?for the different combina...
Language of Hypothesis Testing What is a hypothesis test? A hypothesis test uses a?sample of data?in an experiment to test a?statement?made about the?population The statement is either about a?popu...
Calculating Poisson Probabilities How do I calculate?P(X?=?x):?the probability of a single value for a Poisson distribution? You should have a?GDC?that can calculate?Poisson probabilities You want ...
Properties of Poisson Distribution What is a Poisson distribution? A Poisson distribution is a?discrete probability distribution You will be expected to use the distribution function on your GDC to...
Confidence Interval for μ What is a confidence interval? It is?impossible?to find the?exact value?of the?population mean?when taking a sample The mean of a sample is called a?point estimate The bes...
Combinations of Normal Variables What is a linear combination of normal random variables? This can be used to find probabilities when combining normal random variables What is meant by the sample m...
