Exercise 17-27 Materials Mix and Yield Variances (LO 17-4) Stacy, Inc., produces a product using a process that allows for substitution between two materials, Alpha and Beta. The company has the following direct materiais data for its product: Standard costs for one unit of output Alpha 26 units of input at 52 units of input at $ 7.00 $15.50 Beta The company had the following results in June: Units of output produced 3,700 units Materials purchased and used Alpha 104,200 units at Beta 184,400 units at $ 6.50 $16.20 Required: a. Compute materials price and efficiency variances. (Do not round Intermediate calculations. Indicate the effect of each varlance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Alpha Beta Total Materials price Efficiency variances b. Compute materials mix and yield variances. (Do not round Intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Alpha Beta Total Materials mix Yield variances