Question

In: Statistics and Probability

- Marketing managers at one large multinational company are concerned that some salespeople perform well while...

- Marketing managers at one large multinational company are concerned that some salespeople perform well while others do very poorly. To analyse the problem, a random sample of 20 people was investigated, the sales allowance ($1,000) was determined and the following statistics were calculated: The sample mean, or average sales allowance, is $37.2 and the sample standard error is $7.8. Test whether these statistics provide enough evidence to conclude that the parent variance exceeds $35 (US$1 million) at a 5% significance level.

1. Set a hypothesis.

2. Set up rejection.

3. Obtain the test statistics.

4. Conclusion.

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