The video tutorial covers a survey conducted by Leona on customer visits to a shop. It explains how to calculate the probability of a customer visiting the shop five or more times and estimates the number of customers visiting exactly twice. The tutorial also discusses biased sampling in surveys, particularly when conducted at specific times, and concludes with an explanation of marks allocation for the questions.

How many customers visited the shop 5 or more times according to Leona's survey?

What is the probability that a randomly chosen customer went to the shop 5 or more times?

What was the total number of customers surveyed by Leona?

Estimate the number of customers who went to the shop exactly 2 times last month.

What are two reasons why the sample of customers surveyed after 9:00 AM may not be suitable?

What could be the implications of surveying only non-working adults and pensioners?

Why is it important to have a random sample when conducting a survey?