In an interval estimation for a proportion of a population, the value of z at 99.2% confidence is

Suppose that an automobile manufacturer advertises that its new hybrid car has a mean gas mileage of 50 miles per gallon. You take a simple random sample of n = 30 hybrid vehicles and test their gas mileage.

The sum of the exterior angles of a convex polygon, one angle at each vertex, is equal to how many degrees?

A waitress at Espoo cafe received an 18% tip on a bill of $45. How much was her tip?

Which number is biggest 0.4, 3/4, 0.15

What is the solution to the system of equations 3x + 3 and y = 2x+1?

A family went to an amusement park and paid $12 for each adult and $8 for each child. A group of 15 people went to the park and it cost $140.

Everyday a machine makes 500000 drawing pins and puts them into boxes. The machine needs 150 drawing pins to fill a box, How many boxes can be filled with 500000?

Suppose a triangle has sides a, b, and c with side c the longest side, and that a2 + b2 > c2. Let θ be the measure of the angle opposite the side of length c. Which of the following must be true? Check all that apply ...

Can two cars be traveling the same speed but have difference velocities

Which colonial power's policy was based on assimilation of native peoples?