Sampling distribution for difference between two means

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A financial firm is trying to decide between two training programmes for its employees: a consultant-based programme and a short intensive course offered by a university. To get some preliminary cost data, each programme was implemented at two of the firm's offices located in different cities. The average training cost per employee for 121 employees that received training by consultants (group 1) was £450 with a standard deviation of £56. On the other hand, 81 employees received training via the university course (group 2) with an average cost per employee of £410 and a standard deviation of £28. For decision making purposes, the company needs to know whether the average cost is significantly different between these two training programmes.

The degrees of freedom of the sampling distribution for the difference between the two means are:

Reference no: EM132898951

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