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Let's Check Your Understanding. Activity 1: Guess Who I Am? Direction: Tell whether each of the following statements describes a t-distribution, a normal distribution, or both: The variance is equal to this implies that t The probability distribution curve is bell-shaped. The probability distribution curve symmetrical about zero. The standard deviation is equal to 1. bigtit stay mea The shape of the distribution curve depends on the degrees of freedom Activity 2: BLACKPINK in your Area Direction: Use the t-table to identify the area under the t distribution given the t-value and the number of degrees of freedom. Draw a t-distribution for each number then choose from BLACK or PINK to shade the required area. (The first one is done for you).Answer the following problems. Find the values of f for which the area on the right tail of the t-distribution is 0.05 and the number of degrees of freedom FJequal a. 15 b. 28 C. 100 Find the 99" percentile of the t-distribution with 18 degrees of freedom, AUID DOMINIC R. GRUTA. LP