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Author Question: Paying for purchases One day a store tracked the way shoppers paid for their purchases. Their data ... (Read 111 times)

kaid0807

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Paying for purchases One day a store tracked the way shoppers paid for their purchases. Their data are summarized in the table.
 
  Cash Check Charge Total
  Male 18 10 12 40
  Female 18 12 30 60
  Total 36 22 42 100
  a. What percent of men paid cash?
  b. What is the conditional relative frequency distribution of payment method for women?
  c. If you wanted to show the association between gender and method of payment visually, what kind of graph would you make? (Just name it.)
  d. Is there evidence of an association between gender and method of payment? Explain briefly.

Question 2

Environmental researchers have collected rain acidity data for several decades. They want to see if there is any evidence that attempts to reduce industrial pollution have produced a trend toward less acidic rainfall.
 
  They should display their data in a(n)
  A) bar graph
  B) contingency table
  C) histogram
  D) timeplot
  E) boxplot


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aburgess

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kaid0807

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Reply 2 on: Jul 25, 2018
Wow, this really help


mohan

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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