Mathematics, 05.02.2020 04:43 madelinemg02

Ithink its a
a scientist selects 400 people who snore at night to test how many hours they actually snore. the average length of time is, surprisingly, only 4.2 hours. what kind of study is this?

sample survey
experimental study
double-blind study
observational study

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More questions: Mathematics Another questions

Ithink its a a scientist selects 400 people who snore at night to test how many hours they actually snore. the average length of time is, surprisingly, only 4.2 hours. what kind of study is this? sample survey experimental study double-blind study observational study

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Another question on Mathematics

Ithink its a
a scientist selects 400 people who snore at night to test how many hours they actually snore. the average length of time is, surprisingly, only 4.2 hours. what kind of study is this?

sample survey
experimental study
double-blind study
observational study