Suppose the manager agrees to pay each employee a $50 bonus if they meet a certain goal. on a typical saturday, the oil-change facility will perform 4545 oil changes between 10 a. m. and 12 p. m. treating this as a random sample, there would be a 10% chance of the mean oil-change time being at or below what value? this will be the goal established by the manager.

Ineed i don’t get this at all! and you

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2