Explain the difference between a one-tailed test and a two- tailed test.

  • First Dq questions– How is the alternate hypothesis related to the null hypothesis?
  • Explain the difference between a one-tailed test and a two- tailed test.
  • Second Dq Questions-What does a Z score tell you?
  • What does it mean if the Z score has a negative sign?
  •            Third DQ questions-Explain the eight characteristics of a normal distribution.
  • Explain why converting raw scores to z scores is helpful in understanding data.
  •                  Fourth DQ questions-Explain the concept of a sampling distribution.
  • Identify three characteristics of the sampling distribution of the sample mean.