Question: In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated.

In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated. (Use Company 1 – Company 2.)

Company 1: n1=90

x1=$11.70

σ1 = $2.00

Company 2 n2 = 70

x2 = $11.00

σ2 = $1.60

The test statistic has a value of _____.

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