A120-second song is divided into three parts, the beginning, the middle, and the end. the beginning is one-sixth as long as the end. the middle part is one-half as long as the end. find the length of each part

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

What can you determine about the solutions of this system