1. One day a store tracked the way shoppers paid for their purchases. Their data are summarized in the table. Gender Payment Method Cash Check Charge Total Male 18 10 12 40 Female 18 12 30 60 Total 36 22 42 100 a) What is the marginal distribution (in %) of payment method? Cash_____ Check_____ Charge_____ b) What is the conditional distribution (in %) of payment method for women? Cash_____ Check_____ Charge_____ c) What is the conditional distribution (in %) of payment method for men? Cash_____ Check_____ Charge_____ d) Do "Payment method" and "Gender" appear to be independent? Explain with the above results.
Added by Russell M.
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Step 1:** Calculate the marginal distribution of payment method: - Cash: 36 out of 100, so 36% - Check: 22 out of 100, so 22% - Charge: 42 out of 100, so 42% ** Show more…
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