1. In general, the sample mean is a better estimator of the population mean for larger...

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Statistics

1. In general, the sample mean is a better estimator of thepopulation mean for larger sample sizes.
True
False
2.
If eventsÂ Â A andÂ Â B are not mutuallyexclusive, then it is possible thatÂ Â P( A)+Â Â P( B) > 1.
True
False
3.
What method of data collection would you use to collect data fora study where a drug was given to 95 patients and a placebo toanother group of 95 patients to determine if the drug has an effecton a patient's illness?
designed experiment
observational study
published source
survey

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4.2 Ratings (697 Votes)

1True The sample mean of a group of observations is an estimate of population mean The central limit theorem says for a large enough sample size n the distribution of sample size approaches a normal distribution Although varience is much smaller the sample mean of distribution is identical to the mean of population See Answer

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		designed experiment
		observational study
		published source
		survey