A large company wants to find out what team-building activity its employees prefer. Which of the following samples can give the most valid generalization?
All 624 female employees in the company
400 randomly chosen employees from the list of all employees
all employees who have worked in the company for 5 years or more
a group with one member from each department
4 answers
400 randomly chosen employees from the list of all employees
A hotel maintenance crew wants to estimate how many of the 12,000 lamps in their 30-story hotel need a new light bulb. Which of the following is a random sample of lamps to be inspected?
400 lamps on the first 10 floors
all lamps from the rooms with king-sized beds
all lamps in booked rooms
100 lamps on each floor chosen randomly
400 lamps on the first 10 floors
all lamps from the rooms with king-sized beds
all lamps in booked rooms
100 lamps on each floor chosen randomly
100 lamps on each floor chosen randomly
A local library manager randomly surveys 80 patrons about the type of book they borrow when they visit the library. The manager finds that 3 patrons borrow novels. If the local library has 345 patrons, approximately how many of them borrow novels when they visit the library? Round your answer to the nearest whole number.
? patrons
? patrons