I. Tell whether the statement is TRUE or FALSE. 1. A t-distribution is composed of bell-shaped curves. Each curve represents a degree of freedom. 2. The t-distribution is not symmetric to its mean. It...

Extracted text: I. Tell whether the statement is TRUE or FALSE. 1. A t-distribution is composed of bell-shaped curves. Each curve represents a degree of freedom. 2. The t-distribution is not symmetric to its mean. It means that the distribution at the left of the mean is not the same as the distribution at the right of the mean. 3. The variance of the distribution is greater than one unit. 4. As the sample size decreases, the t-distribution approaches the standard normal distribution. 5. The total area under any of the curves is equal to 1.