Use the given information to find the minimum sample size required to estimate an unknown population mean.
how many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? we want 99% confidence that the sample mean is within $200 of the population mean, and the population standard deviation is known to be $1,100.
a)117
b)82
c)201
d)165

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%