Thirty subjects are randomly selected to be a part of a taste test in which half of the group will try a new version of a soda and the other half will try the original recipe. neither the researchers conducting the experiment nor the subjects participating will know who is tasting the new soda and who is tasting the original version of the soda.

a) controlled experiment

b) randomized experiment

c) double-blind experiment

d)biased experiment

Need solving this second acceleration problem.

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

Oliver had $50 on the day before his birthday. after he recived some money for his birthday , he had $75. write and solve eqaution to find how much money oliver received for his birthday. x+50=75