The football and soccer teams at Juan’s middle school are selling movie tickets. He wants to determine the average number of tickets sold at the school. First, he surveyed eight random players on the football team. Then, he surveyed every third athlete on the football and soccer team. Which sampling technique should produce a more representative sample?
Students at Hampton Middle School sold T-shirts as a school fundraiser. Sylvie asked 12 random seventh-grade students how many T-shirts they sold for the fundraiser. The number of T-shirts each student sold is listed below.3, 4, 8, 5, 2, 5, 0, 5, 3, 4, 3, 7What is the mean of the data set rounded to the nearest tenth?
At Brighton Middle School, Mr. Yule asked 50 randomly selected students from each grade level about their favorite subject, and 12 chose science. He used this data to draw the inference that about 25% of middle school students will indicate science is their favorite subject. If there are 200 students all together, did he make a reasonable inference?
Hamden city’s police department needs to choose whether to build a new addition to the police station or to buy new squad cars. Which sampling option might they choose to survey the community?
When Andrei surveyed 36 random seventh-grade students in the lunchroom, he found that 7 out of 9 would like to try or have already tried snorkeling. Using proportional reasoning, about how many of the 810 seventh-grade students in his school would like to snorkel?
The city of Hamden received money for improvements of the town’s park. The park committee polled a random sample of 75 residents from the town. Of the 75 residents, 27 would like to see more trees planted in the park. From this information, what can be inferred?
Two random samples were taken to determine how often people in a community listen to the local radio station each month. The first sample surveyed 15 people as they exited the bank on Main Street. The first sample found that the mean number of hours they listened to the radio each month was 20.The second sample surveyed every sixth person as they exited the only local grocery store until 100 people were surveyed. The second sample found that the mean number of hours they listened to the radio each month was 12.Which statements are true? Check all that apply.
In a school with 2,000 students, a random sample of 120 students were asked which fruit is their favorite. Their responses are shown in the table below.Survey ResponsesFavorite FruitNumber of StudentsBanana23Apple18Orange34Peach27Pear18Using proportional reasoning, about how many students out of the 2,000 would you expect to select an orange as their favorite fruit?
Principal Phillipi used a random sample of 20 student records to determine how far, in miles, students live from the school. The results are shown below.3, 4, 5, 3, 4,5, 6, 5, 4, 3,2, 3, 4, 5, 6,4, 8, 4, 3, 2 What is the mean distance that his students live from the school, rounded to the nearest tenth?
When Jim surveyed 5 sixth-grade students at the community skating rink, he found that only 1 out of the 5 had completed the science project. He knows there are about 160 sixth-grade students in his community, so he infers that around 32 students have finished their science project. Is this a good inference?
Did you find these answers helpful?