You are able to get three summer jobs to sabe for future college expenses. in your job as a cashier, your work twenty hours per week and earn $6.50 per hour. your second and third jobs are both at local hospital. there yu can earn $8.50 per hour as a payroll clerck and $6.00 per hour as an aide. you always work ten hours fewer per week as an aide than you do as the payroll clerk. your total weekly salary depends on the number of hours that you work at each job determine the independent and dependent variables for this situation

The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr