Corn was grown in two different kinds of soils A and B. The heights of the stalks were measured. A sample of 13 stalks from soil A gave a mean height of 6.3 ft and a standard deviation of 1.2 ft. A sample of 16 stalks from soil B gave a mean height of 6.5 ft and a standard deviation of 1.1 ft. Assume the heights are normally distributed. To be specific, assume the heights of stalks from soil A has the distribution N(µA,σ²A), and the heights of stalks from soil B has the distribution N(µB,σ²B).(a) Find a 90% confidence interval for σA/σB. (b) Assume that σA = σB, find a 98% confidence interval for µA – µB.

Samson is going shopping for sugar and butter to make three different kinds of cookies: lemon bars, peanut butter cookies, and sugar cookies. the recipe for lemon bars calls for 2 cups of flour, 2 cups of sugar, and 1 stick of butter. the peanut butter cookie recipe calls for 2 cups of flour, 4 cup of sugar and 2 stick of butter. the sugar cookie recipe calls for 1 cup of flour, 2 cups of sugar, and 2 sticks of butter. sampson has 13 cups of flour at home, and he buys 12 cups (6 pounds) of sugar and 10 sticks of butter. how many batches of each type of cookie can he make? samson can make batches of lemon bars, batches of peanut butter cookies, and batches of 09 cookies submit reset