Expanding Quadratics You should be familiar with all aspects of basic algebra including manipulating expressions; simplifying; expanding and factorising brackets with both linear and quadratics. I...
Normal Hypothesis Testing What steps should I follow when carrying out a hypothesis test for the mean of a normal distribution? Following these steps will help when carrying out a hypothesis test f...
Poisson Hypothesis Testing How is a hypothesis test carried out for the mean of a Poisson distribution? The population parameter being tested will be the mean, λ , in a Poisson distribution As it i...
Binomial Hypothesis Testing How is a hypothesis test carried out with the binomial distribution? The population parameter being tested will be the probability, p in a binomial distribution B(n , p...
Type I & Type II Errors Any hypothesis test will only provide evidence about whether a parameter has changed or not. A conclusion can not claim with certainty whether to accept or reject the nu...
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 value of a population parameter A hypothesis te...
Normal Approximation of Poisson When can I use a normal distribution to approximate a Poisson distribution? The greater the value of λ in a Poisson distribution, the more symmetrical the distributi...
Choosing Distributions When should I use a Poisson distribution? A random variable that follows a Poisson distribution is a discrete random variable A Poisson distribution is used when the random v...
Continuous Uniform Distribution What is meant by the continuous uniform distribution? This is a special case of a probability density function for a continuous random variable The normal distributi...
