Show that the Weibull distribution has a scale parameter. | Numerade

The Weibull distribution is defined as:

Problem 43.5 Weibull distribution: From an analysis of wind speed data (hourly interval average, taken over a 1year period), the Weibull parameters are determined to be c = 6 m/s and k = 1.8 at a potential WTsite.The Weibull PDF is given by p(U) = ((k)/(c))((U)/(c))^k-1[-((U)/(c))^k]a. Estimate the number of hours per year that the wind speed will be between Ub = 6.5 m/s and UA =7.5 m/s during the year.b. Estimate the number of hours per year that the wind speed is above 16 m/s.