Lesson Worksheet: Prediction Using Probability Mathematics • 7th Grade
In this worksheet, we will practice predicting the actions of a larger group using a sample and finding the expected value.
Q4:
A factory produces two types of shirts: A and B. The table shows how many shirts of each type were sold in 5 samples of 100 shirts from 5 different shopping malls.
Shopping Mall | (1) | (2) | (3) | (4) | (5) |
---|---|---|---|---|---|
Sales of Type A | 35 | 66 | 29 | 44 | 53 |
Sales of Type B | 65 | 34 | 71 | 56 | 47 |
If the factory sells 3,000 shirts, how many of them do you expect to be of type A?