Construct a 90% confidence interval for the population mean. Assume the population has a normal distribution. A sample of 15 randomly selected math majors has a gpa of 2.86 with at standard deviation of 0.78.

Jessica is a custodian at oracle arena. she waxes 20 m2 of the floor in 3/5 of an hour. jessica waxes the floor at a constant rate. at this rate how many sqaures meters can she wax per hour

How far is x from 5 on a number line?

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second