(Use the following information for the next three questions.)
A researcher is interested in comparing the usage of bank debit cards by consumers in rural (r) and urban (u) areas. Each year for the past five years, she has surveyed 500 individuals (one half urban, one half rural) randomly selected from across the United States. She is specifically interested in any differences that may exist between the two groups with regard to usage. The results of the current study indicate that people in urban areas use bank debit cards 12 times per month on average ($ \overline{X}$ u ), while those in rural areas use bank cards 10 times per month on average ($ \overline{X}$ r )
-Which of the following is the null hypothesis that the researcher should use in comparing the usage rates?

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The Answer of (Use the following information for the next three questions.)
A researcher is interested in comparing the usage of bank debit cards by consumers in rural (r) and urban (u) areas. Each year for the past five years, she has surveyed 500 individuals (one half urban, one half rural) randomly selected from across the United States. She is specifically interested in any differences that may exist between the two groups with regard to usage. The results of the current study indicate that people in urban areas use bank debit cards 12 times per month on average ($ \overline{X}$ u ), while those in rural areas use bank cards 10 times per month on average ($ \overline{X}$ r )
-Which of the following is the null hypothesis that the researcher should use in comparing the usage rates?

(Use the Following Information for the Next Three Questions X‾ \overline{X}X

(Use the Following Information for the Next Three Questions $\overline{X}$