It has become more common for shoppers to? "comparison shop" using the Internet. Respondents to a survey in 2013 who owned cell phones were asked whether they? had, in the past 30? days, looked up the price of a product while they were in a store to see if they could get a better price somewhere else. Here is a table of their responses by income level. Complete parts? a) and? b) below.

DATA TABLE

_         <$30K  $30K-$49.9K    $50K-$74.9K    >$75K

Yes     164      92        150      162

No       742      426      246      442

a) Compute the χ2 statistic.

χ2equals=

(Round to two decimal places as? needed.)

?b) Calculate and examine the standardized residuals. What? pattern, if? any, do they show that would be of interest to retailers concerned about cybershopping? comparisons? Complete the table below.

<$30    $30-$49.9  $49.9-$74.9 

Yes

No

?(Round to five decimal places as? needed.)