The following data on grip strength (N) for 42 individuals was read from a graph in the article “Investigation of Grip Force, Normal Force, Contact 2008: 734–744):

a. What does the data suggest about the population distribution of grip strength? Why might the median be a more appropriate measure of “typical” grip strength than the mean?
b. Test the hypothesis that the population median grip strength is less than 170 N at the .05 significance level.

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