An application program is executed on a nine- computer cluster. A benchmark pro-gram took time T on this cluster. Further, it was found that 25% of T was time in which the application was running simultaneously on all nine computers. The remaining time, the application had to run on a single computer. Calculate the effective speedup under the aforementioned condition as compared to executing the program on a single computer. Also calculate a, the percentage of code that has been parallelized (programmed or compiled so as to use the cluster mode) in the preceding program. Show end explain your calculations in detail to justify your answer. Suppose that we are able to effectively use 17 computers rather than 9 computers on the parallelized portion of the code. Calculate the effective speedup that is achieved. Show end explain your calculations in detail to justify your answer.

Explain the circumstances for which the interquartile range is the preferred measure of dispersion. what is an advantage that the standard deviation has over the interquartile range? choose the correct answer below. a. the interquartile range is preferred when the distribution is symmetric. an advantage of the standard deviation is that it increases as the dispersion of the data increases. b. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation. c. the interquartile range is preferred when the distribution is symmetric. an advantage of the standard deviation is that it is resistant to extreme values. d. the interquartile range is preferred when the data are bell shaped. an advantage of the standard deviation is that it is resistant to extreme values. e. the interquartile range is preferred when the data are skewed or have outliers. an advantage of the standard deviation is that it uses all the observations in its computation. f. the interquartile range is preferred when the data are bell shaped. an advantage of the standard deviation is that it increases as the dispersion of the data increases.