The claim, mathematically, is p=0.50{“version”:”1.1″,”math”:”p=0.50″}

We would use the Student t distribution to construct our confidence interval. 

Determine the test of significance (t-test or z-test) and justify your choice.

State the standardized test statistic. Justify by formula or stating the input to your calculator.

The claim, written mathematically, is μ>13.5{“version”:”1.1″,”math”:”\mu>13.5″}

The claim is the alternative hypothesis.

Sketch a scatter plot for the data.  You may either attach your sketch by hand our your output from StatCrunch.

Determine the test of significance (t-test or z-test).

State the null and alternative hypotheses. Write your answers as “H_0: answer” and “H_a: answer”

How large of a sample of students must be selected if we want to be 95% confident that our estimate is within 2.5 points of the population mean test score?