# Web Activities

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Determine the p-value and significance of the average commute time for the class.

Go to this website: http://www.socscistatistics.com/tests/ztest_sample_mean/Default2.aspx

In 2010, the U.S. census was able to determine that average commute time for U.S. adults. They determined that mean is μadults = 22.7, with a standard deviation of σ = 5.5. Have all the students report their commute time traveling to school this morning. Compute the class average. Given that the you believe that this class differs in their commute times, express the null and alternative hypothesis for each state, compute the test statistic and p-value (assuming the null hypothesis to be true) using the calculator, and draw a statistical conclusion and assess the practical significance of each result.

Determine the p-value and significance of the average number of drinks (separately for men and women) time for the class.

Go to this website: http://in-silico.net/tools/statistics/ztest

A recent compressive survey found that at age 21 men (μmen = 12, with a standard deviation of σ = 2) have more drinks per week than women (μmen = 2.5, with a standard deviation of σ = 1) Have all the students report their number of drinks they had last week. Compute the class average separately for men and women. Compare the class averages for men and women with the population means from above. Specifically, for each gender, compute the test statistic and p-value (assuming the null hypothesis to be true) using the calculator, and draw a statistical conclusion and assess the practical significance of each result.

Think of a simple question that you can post on social media and compare your friends to population mean and standard deviation.

Go to this website: http://in-silico.net/tools/statistics/ztest

Think about a simple question you could ask your friends through social media. Before you ask the question, be sure to do some research and be sure you know the norms or the population average and standard deviation. Then, post you question online and compute the average for your social network. Then, express a null and alternative hypothesis, compute the test statistic and p-value (assuming the null hypothesis to be true) using the calculator, and draw a statistical conclusion and assess the practical significance of each result.