Mathematics, 01.09.2019 02:30 stace49
You want to determine the average number of text messages that students at your school send in a month you want to collect data from a random sample of at least 200 students which of these would be the most valid method for collecting data?
hand out and collect surveys in all of the freshman homerooms
hand out and collect surveys at a football game
hand out and collect surveys from all of the teachers
hand out and collect surveys from students in the hallways
Answers: 1
Mathematics, 21.06.2019 20:40
Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?
Answers: 3
Mathematics, 21.06.2019 21:50
In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?
Answers: 1
Mathematics, 22.06.2019 03:40
The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?
Answers: 3
You want to determine the average number of text messages that students at your school send in a mon...
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