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Author Question: Paying for purchases One day a store tracked the way shoppers paid for their purchases. Their data ... (Read 110 times)

kaid0807

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on: Jul 25, 2018
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
Stats: Modeling the World ¦ Bock, Velleman, De Veaux ¦ 4th Edition
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aburgess

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Reply #1 on: Jul 25, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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kaid0807

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Reply 2 on: Jul 25, 2018
:D TYSM

amynguyen1221

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Reply 3 on: Yesterday
Wow, this really help

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