Use the formula to find the standard error of the distribution of differences in sample means, . Samples of size 105 from Population 1 with mean 90 and standard deviation 12 and samples of size 70 from Population 2 with mean 70 and standard deviation 16

Round your answer for the standard error to two decimal places.

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

In the geometric progression –3, 12, −48… what term is 3,072?

The surface area of the triangular prism is .