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?(1 point)
Responses
all 624 female employees in the company
all 624 female employees in the company
all employees who have worked in the company for 5 years or more
all employees who have worked in the company for 5 years or more
400 randomly chosen employees from the list of all employees
400 randomly chosen employees from the list of all employees
a group with one member from each department
a group with one member from each department
400 randomly chosen employees from the list of all employees
A bar graph shows pet ownership.
The x-axis shows type of pet and represents dog, cat, golfish, and hamster. The y-axis represents number of students and ranges from 0 to 11 in increments of 1. The data shows 10 dogs; 8 cats; 2 goldfish; and 3 hamsters.
Use the graph to determine the difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets. Round the percentages to the tenths place.
(1 point)
Responses
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 30.4%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 30.4%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 31%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 31%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 21.8%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 21.8%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 34.8%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 34.8%.
The difference in the percentage of students who have dogs for pets and the percentage of students who have hamsters for pets is 34.8%.
Statistics Unit Test
3 of 15 3 of 15 Items Question
Use the image to answer the question.
A pie chart divided into 6 inequal sections is titled Activity Hours per Week. The sections are labeled school, 40, 24 percent; eat, 21, 13 percent; sports or play, 15, 9 percent; social media or TV, 24, 14 percent; sleep, 56; and other 12, 7 percent.
The activity for one week of 168 people was tracked and displayed in a circle graph. What was the percentage of time spent on sleep? Round the percentage to the nearest whole number.
(1 point)
The percentage of time spent on sleep was %
33%
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?(1 point)
Responses
400 lamps on the first 10 floors
400 lamps on the first 10 floors
100 lamps on each floor chosen randomly
100 lamps on each floor chosen randomly
all lamps in booked rooms
all lamps in booked rooms
all lamps from the rooms with king-sized beds
all lamps from the rooms with king-sized beds