Nike took a risk on Colin Kaepernick for its “Dream Crazy” #JustDoIt campaign. The first ad...

Nike took a risk on Colin Kaepernick for its “Dream Crazy” #JustDoIt campaign. The first ad aired on national TV September 6, 2018. A year from now they will assess whether the risk paid off. To answer this question they will collect weekly sales data from September 6, 2018 – September 5, 2019 and compare it to 52 weeks of sales data over the previous year, September 6, 2017 to September 5, 2018. For each data point, they will record the date and sales. a. How would you analyze this data? • State the null and alternative hypothesis. • What statistical test would you use?

Expert Solution

Nike took a risk on Colin Kaepernick for its “Dream Crazy” #JustDoIt campaign. The first ad aired on national TV September 6, 2018. A year from now they will assess whether the risk paid off. To answer this question they will collect weekly sales data from September 6, 2018 – September 5, 2019 and compare it to 52 weeks of sales data over the previous year, September 6, 2017 to September 5, 2018. For each data point, they will record the date and sales.

How would you analyze this data?

Since the data are collected in two different time periods, we consider this as two independent samples. We have to apply two independent sample procedure to compare the whether the two population means are different.

State the null and alternative hypothesis.

This is a two sided test.

What statistical test would you use?

Since sample size is 52 (>30) we can use parametric procedure to compare two population means.

We can use Independent sample t test.

milcah answered 3 months ago

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