Deirdre won a medal at a track meet. Her medal has a mass of 0.4 kg and has a volume of 0.000022 m². Bronze has an approximate
density of 7,700 kg/m3, silver has an approximate density of 10, 500 kg/m3, and gold has an approximate density of 19,320 kg/m3.
Based on this information, which medal was Deirdre most likely awarded? Move the options to complete the sentence.
Deirdre won a
medal because the density of her medal is approximately
kg/m3.
gold
silver
bronze
7,700
10,500
18,180
19, 250
19,320
26,250
48,300

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