Mathematics, 01.10.2021 22:40, colestout2993
The student council at a high school wants to conduct a survey of student opinion. Council members want to begin with a simple random sample of 160 students. Which of the following survey methods will produce a simple random sample?
Survey the first 160 students to arrive at school in the morning
Number the students on the school roster. Use a table of random numbers to choose 160 students from this roster for the survey.
Survey every 10th student entering the school gym until 160 students are surveyed
Use random numbers to choose 40 each of freshmen, sophomores, juniors, and seniors
Number the gym seats. Use a table of random numbers to choose seats and interview the students until 160 have been interviewed
Answers: 2
Mathematics, 21.06.2019 21:40, oprajapati
The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?
Answers: 2
Mathematics, 21.06.2019 22:00, arrissa1234hinkle
Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.
Answers: 1
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