Sample mean chlorophyll concentrations for the four Jerusalem artichoke varieties introduced in Exercise 15.9 were .30, .24, .41, and .33, with corresponding sample sizes of 5, 5, 4, and 6, respectively. In addition, MSE = .0130. Calculate the 95% T–K intervals, and then use the underscoring procedure described in this section to identify significant differences among the varieties.

Data from Exercises 9

High productivity and carbohydrate storage ability of the Jerusalem artichoke make it a promising agricultural crop. The article “Leaf Gas Exchange and TuberYield in Jerusalem Artichoke Cultivars” (Field Crops Research [1991]: 241–252) reported on various plant characteristics. Consider the accompanying data on chlorophyll concentration (gm/m²) for four varieties of Jerusalem artichoke:

Suppose that the sample sizes were 5, 5, 4, and 6, respectively, and also that MSE = .0130.

Transcribed Image Text:

Variety Sample mean BI .30 RO .24 WA .41 TO .33