The manager of an electronic parts supplier is tracking the

The manager of an electronic parts supplier is tracking the variance in the time between a parts order and delivery of the part. Company standard specify that the variance should be no more than 2.4 days. A random sample of 61 orders showed the sample variance to be s2 = 2.9 days. At the 10% level of significance, does the variance seem larger than specified?

Solution

Yes, The variance seems larger than specified.