Quiz 8

• when performing a significance test for the population proportion, the normality condition (assumption) is satisfied when

  np(1 - p) is at least 5
• when performing a significance test for population mean, the normality condition (assumption) is satisfied when there are

  30 or more observations in a sample
• when performing a significance test for population mean, the normality condition is satisfied when the population distribution is


  known to be normally distributed
• when performing a significance test for population mean, the normality condition is satisfied when the histogram of the data distribution


  is roughly bell-shaped
• the more we sample from a population


  the better we understand about the population
• test statistic


  describes how far a point estimate falls from the parameter value given in the null hypothesis
• the test statistic is usually measured by


  the number of standard errors between the point estimate and the parameter value in the null hypothesis
• statistically significant


  a test where we reject the null hypothesis