SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Draw the given table
STEP 2: Explain how to get the relative frequency
The relative frequency is derived by dividing the columns by the total frequency.
STEP 3: Complete the table

STEP 4; Draw the complete table
STEP 5: Calculate the relative Frequency

STEP 6: Calculate the percentage of customers without smartphones

Hence, the percentage of customers without smartphones is 34%