What is the expected frequency for each category in the table below?  Calculate the chi-square and determine if the null hypothesis (there are no significant differences) should be rejected or accepted. Report the calculated chi-square and whether you accept or reject the null hypothesis for the data.   Police are Police are not Row Total   Approachable Approachable   Not afraid at all fo = 30 fo = 40 70 Somewhat unafraid fo = 20 fo = 42 62 Somewhat afraid fo = 60 fo = 40 100 Afraid fo = 55 fo = 20 75 Column Total 165 142

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