Is this table a function? explain how you know

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

Use sigma notation to represent the following series for 9 terms.

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship