Question 25 3 pts Consider the following three data series {Series A, Series B, and Series C], representing three random samples of a variable with 7 observations {n = 7) each: Series A: (1, 2, 3,4, 5, 6. 7] Series B: {1,2, 4, 4, 4, 6, 7} Series C: (1,4, 4, 4, 4, 4, 7} Series A is: positively skewed. Cannot be determined with the information given. negatively skewed. symmetrical. Question 26 Consider the following three data series {Series A, Series B, and Series C], representing three random samples of a variable with 7 observations {n = 7} each: Series A: (1,2, 3,4, 5,6, 7] Series B: {1,2, 4,4,4, 6, 7} Series C: (1,4, 4, 4, 4, 4, 7} Which series has the largest standard deviation? Series C Cannot be determined with the information given. SeriesA Series B Question 27 Consider the following data series for a random variable W, which represents a random sam ple of 5 observations: W={1, 3, 4, 7, 10} Su ppose someone claims that the population variance is greater than 5 {that is, the alternative hypothesis is that the true population variance , sigma-squared, is greater than 5]. The value of the test statistic is