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?
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?
During her lunch hour, Shawna asked 40 students how many after-school clubs they joined. The given list shows the number of clubs that the students joined. 2, 2, 3, 0, 3, 2, 4, 2, 1, 4, 3, 2, 4, 1, 0, 2, 1, 3, 2, 0, 1, 1, 2, 1, 0, 3, 0, 1, 4, 1, 1, 0, 2, 3, 2, 0, 3, 2, 0, 1 If this sample is representative of the student population of 360 students, about how many students in the school joined three clubs?
The manager of a popular restaurant wants to know what types of vegetarian dishes people prefer to eat. Which sample would provide the most accurate data?
Principal Phillipi used a random sample of 20 student records to determine how far, in miles, students live from the school. The results are as shown. 3 comma 4 comma 5 comma 3 comma 4 comma 5 comma 6 comma 5 comma 4 comma 3 comma 2 comma 3 comma 4 comma 5 comma 6 comma 4 comma 8 comma 4 comma 3 comma 2 What is the mean distance that his students live from the school, rounded to the nearest tenth?
The drama club members at Millie’s middle school are selling tickets to the school play. Millie wants to determine the average number of tickets sold. First, she surveyed the club members in her homeroom, and then she surveyed every third member of the club in her physical education class. Which sampling technique should produce a more representative sample?
While at summer camp, Mike asked a random camper from each of the 12 cabins how many siblings he or she had. The given results display the responses. 3, 2, 0, 1, 0, 2, 3, 4, 1, 2, 2, 1 If there are 48 campers altogether, use Mike’s data to infer the mean of the population. What is the mean number of siblings for the population rounded to the nearest unit?
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?
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?
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