True / False Questions (2 points each)
Chapter 8
1. The sampling distribution of X must be a normal distribution.
2. The reason sample variance has a divisor of n-1 rather than n is that it makes the sample variance an unbiased estimate of the population standard deviation.
3. The standard deviation of the sampling distribution of the sample mean increases as the sample size increases.
4. If a population is known to be normally distributed, then it follows that the sample mean must equal the population mean.
5. If the sampled population is a normal distribution, then the sampling distribution of X must be normal for large samples but may not be normal for a small sample.
6. The mean of the sampling distribution of X (X-bar) is not always equal to the mean of the sampled population.