Jenny had $424.15 in her checking account before going shopping for school supplies. She put checks for $69.15 and $92.45 into her account as she began her trip. She stopped at three different stores where she spent $218.63, $155.38, and $77.81 on her school supplies. How much money did Jenny have in her account when she completed her shopping trip? A $-189.27 B $133.93 C $585.75 D $714.37\

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

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

For each given situation, determine if the method of randomization is either appropriate or not appropriate