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There are dozens of personality tests available on the World Wide Web (including one that tells the test taker which dead Russian composer he's most like). One test, scored on a scale of 0 to 200, is designed to give an indication of how "personable" the test taker is, with higher scores indicating more "persona bility." Suppose that a group of 60 classmates has taken this test and is summarizing the scores in the following histogram: Frequency 0 40 80 120 160 200 Personality test score From the histogram: a) Find frequency distribution.(4 points) b) Estimate the mean and standard deviation of this personality test in the study. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place._