Random samples of size n=36 are taken from a population whosemean an standard de

Question

Random samples of size n=36 are taken from a population whosemean an standard deviation are 20 and 15, respectively. Thedistribution of the population is unknown. The mean andswtandard error of the mean of the sampling distribution of samplemeans are: 1. 36 and 15 2. 20 and 15 3. 20 and .417 4. 20 and 2.5 5. none of the above Random samples of size n=36 are taken from a population whosemean an standard deviation are 20 and 15, respectively. Thedistribution of the population is unknown. The mean andswtandard error of the mean of the sampling distribution of samplemeans are: 1. 36 and 15 2. 20 and 15 3. 20 and .417 4. 20 and 2.5 5. none of the above

Explanation / Answer

mean given in the question = 20 standard error of mean = / n = 15 / 36 =15/6 = 2.5 hence the answer is option 4.(20 and 2.5)

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