I need help with page 289 volume one 4th grade

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

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work

Two consecutive negative integers have a product of 30. what are the integers?