1. Samples of size 80 are selected from a population with mean 32 and standard deviation of 8.2. The mean of the sampling distribution of the sample means is С. 80 D. 0 A. 8.2 В. 32 2. A sample of size n is taken from the population which has an unknown distribution with mean and standard deviation, and is used for the sample mean distribution. For which of the following sample sizes is this valid? А. 2 В. 29 С. 31 D. all of these 3. Sample size of 49 are selected from a population with mean 29 and standard deviation of 14. The value of the standard error is A. 2 В. 4 С.6 D. 12

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