Customers arrive at the movie theater at the movie time indicated only to find they need to sit through commercials and previews. Many complain that this time is too long. WSJ 2012
determined in a preliminary sample that the standard deviation of the amount of time devoted to
previews is 4 minutes. If we want to estimate the population mean time for previews at movie
theatres with a margin of error of 75 seconds, what sample size should be drawn?
b. Assume a 99% confidence level

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>

other answer is correct. i had used the radius of the radius somehow. a website:

step-by-step explanation:

what does 'mandy have ben 780 bottle caps. ' mean?

step-by-step explanation:

at each of the parallel lines adjacent angles are supplementary. the angles have special names identifying their positions with respect to the parallel lines and transversal. they are corresponding angles, alternate interior angles, or alternate exterior angles. an angles is congruent to its matched angle.