Question

1. Two competing marketing campaigns were implemented for a specific product at two different convenience store locations. Daily unit sales were tracked for 20 days at each location. The results at location 1 were a sample mean of 200 and a sample standard deviation of 40. The results at location 2 were a sample mean of 180 and a sample standard deviation of 30.

   1. Use Minitab to assess whether one marketing campaign should be preferred over another.

      Assume equal population variances.

   2. Show a plot that describes the calculation of the p-value.

Answer 1

solution:

4

a)

We have used MINITAB software for this problem,

to test

H0: means are equal

vs

H1: means are not equal

here we assume significance level = 0.05

at significance 0.05 we can see that p-value =0.082 > 0.05

hence we can accept H0 and can say that at 95% confidence the means are equal.

B)

please give me thumb up