Question

1. In simple linear regression analysis, we assume that the variance of the independent variable (X) is equal to the variance of the dependent variable (Y) True False 2. The standard deviation of the sampling distribution of the sample mean is the same as the population standard deviation. True False 3. If n=20 and p=.4, then the mean of the binomial distribution is 8 True False 4. If a population is known to be normally distributed, then it follows that the sample standard deviation must equal population standard deviation. True False 5. If the level of confidence and sample size remain the same, a confidence interval for a population proportion p will be narrower when p(1-p) is larger than when it is smaller. True False 6. In simple regression analysis, R2 measures the proportion of the variation explained by the simple linear regression model. True False

Answer 1

1). False 2). True 3). True 4). True 5). True 6). False