Author Question: In estimating the difference between two population means, if a 95 percent confidence interval ... (Read 138 times)

Yi-Chen · **on:** Jun 24, 2018

In estimating the difference between two population means, if a 95 percent confidence interval includes zero, then we can conclude that there is a 95 percent chance that the difference between the two population means is zero.

Indicate whether the statement is true or false

Question 2

The Cranston Hardware Company is interested in estimating the difference in the mean purchase for men customers versus women customers. It wishes to estimate this difference using a 95 percent confidence level.

Assume that the variances are equal and the populations normally distributed. The following data represent independent samples from each population:Men Women16.49 17.2133.34 17.4620.18 15.6526.39 10.6728.03 14.0726.02 19.6116.08 15.9032.27 11.1721.66 24.6632.32 13.3529.79 20.8733.37 22.57Based on these data, the company can conclude that there is a statistical difference between men and women with regard to mean spending at the hardware store with men tending to spend more on average than women. Indicate whether the statement is true or false