Atransectis an archaeological study area that is 1/5 mile wide and 1 mile long. Asitein a transect is the location of a significant archaeological find. Letxrepresent the number of sites per transect. In a section of Chaco Canyon, a large number of transects showed thatxhas a population variance²= 42.3. In a different section of Chaco Canyon, a random sample of21transects gave a sample variances²=47.3for 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.