What sample size would be required to detect a true mean diameter as low as 1.495 inches if we wanted the power of the test to be at least 0.87

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

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