Atransect is an archaeological study area that is 1/5 mile wide and 1 mile long. a site in a transect is the location of a significant archaeological find. let x represent the number of sites per transect. in a section of chaco canyon, a large number of transects showed that x has a population variance σ2 = 42.3. in a different section of chaco canyon, a random sample of 25 transects gave a sample variance s2 = 51.3 for the number of sites per transect. use a 5% level of significance to test the claim that the variance in the new section is greater than 42.3. find a 95% confidence interval for the population variance.