SOL Prep

Inferential Statistics

Virginia SOL PS.IS.1

Apply properties of sampling distributions and inference procedures to make decisions about population proportions.

Study PS.IS.1 with SOL PrepBack to Probability and Statistics

What students need to be able to do

  • Describe the shape, center, and spread of the sampling distribution of a proportion.
  • Construct a one-sample z confidence interval: identify conditions (random sample, independence, normality), calculate using technology, and interpret the interval.
  • Explain how changes in confidence level and sample size affect interval width and margin of error.
  • Calculate and interpret a point estimate and margin of error for a proportion confidence interval.
  • Explain how and why hypothesis testing allows statistical decision-making.
  • Apply one-sample z hypothesis testing: construct null and alternate hypotheses, identify conditions, calculate and interpret p-value, determine whether to reject the null hypothesis, and interpret results.
  • Plan and conduct a statistical study about a proportion using the statistical cycle.