Question

the histogram shows the number of items that customers bought during a trip to the grocery store one day. four hundred customers took a trip to the grocery store that day. which is the best estimate for the number who bought fewer than 20 items during their trip?

Explanation:

Step1: Identify relevant intervals

The intervals for fewer than 20 items are 0 - 10 and 10 - 20. The relative - frequencies for these intervals are 0.15 and 0.12 (estimated from the histogram).

Step2: Calculate total relative - frequency

The total relative - frequency for fewer than 20 items is $0.15 + 0.12=0.27$.

Step3: Calculate number of customers

We know there are 400 customers in total. Multiply the total relative - frequency by the total number of customers: $400\times0.27 = 108$. The closest answer to 108 among the options is 106.

Answer:

106