Construct and interpret a 95% confidence interval estimate for the difference in the mean number of cell phone calls per month for 18-24-year-olds and 45-54-year-olds.

The polynomial equation x^3-4x^2+2x+10=x^2-5x-3 has complex roots 3+-2i What is the other root? -3 1 3 10

Of the 420 students enrolled in basic math, only 30% are first year students. How many are first year students? How many are not?

Which of the following illustrates the closure property of addition of real numbers

A packaging company is going to make open-topped boxes, with square bases, that hold 140 cubic centimeters. What are the dimensions of the box that can be built with the least material? (Round your answers to the nearest hundredth.)

What is a property of an angle?

The probability that a student guesses the correct answer to a four -choice multiple choice question is P (correct) = 0.25. How many correct answers should a student expect to guess on a test with 52 four -choice multiple choice questions?

Which of the following is the correct description of 'Slope'?

Rewrite 105,000 in scientific notation. 1.5 * 10'3 1.05 * 10'5 1.5 * 10'4 1.05 * 10'3

Factor completely: 16x^4 - 1

There are 60 donuts in 5 packages. how many donuts are in 3 packages?