Math Data management
posted by Rania .
A survey of 1000 television viewers conducted by a local television station produced the following data:
•40% watch the news at 12:00
•60% watch the news at 18:00
•50% watch the news at 23:00
•25% watch the news at 12:00 and at 18:00
•20% watch the news at 18:00 and at 23:00
•10% watch all three news broadcasts
a) what percentages of those surveyed watch at least one of these programs?
b)what percent watch none of these broadcasts?
c) what percent view the news at 12:00 and at 18:00,but not at 23:00
e)What percent watches exactly two of these shows.