Teachers' Salaries The average annual salary for all U.S. teachers is $47,750. Assume that the distribution is normal and the standard deviation is $5680. Find the probabilities. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to at least four decimal places. Part 1 of 2 (a) A randomly selected teacher earns between S36,000 and $51,000 a year. P(36,00044,000) = |

Q: I need help

A: Cos(B) = ?

Q: Suppose that f(2) = -3, g(2) = 4, f'(2) = -2, and g'(2) = 7. Find h'(2). (a) h(x) = 5f(x) – 4g(x)…

A: Since you have asked multiple questions in a single request we would be answering only the first…

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.