contestada

(04.04 MC)

As shoppers left a supermarket, they were asked if they used a shopping list and if they bought more items than they expected. The table contains the results.


Bought only the expected items Bought more items than expected Row Totals
Had a shopping list 0.43 0.17 0.60
Did not have a shopping list 0.22 0.18 0.40
Column Totals 0.65 0.35 1.00


If a customer purchased more items than planned, what is the likelihood that the customer did not use a shopping list? Round your answer to two decimal places.
0.51
0.49
0.28
0.17