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the box plots below show attendance at a local movie theater and high school basketball games:

graph below.

which of the following best describes how to measure the spread of the data?

a. the iqr is a better measure of spread for movies than it is for basketball games.
b. the standard deviation is a better measure of spread for movies than it is for basketball games.
c. the iqr is the best measurement of spread for games and movies.
d. the standard deviation is the best measurement of spread for games and movies.

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