The manufacturer of a certain brand of aluminum foil claims that the amount of foil
on each roll follows a Normal distribution
with a mean of 250 ft? and a standard
deviation of 2 ft? To test this claim, a
restaurant randomly selects 10 rolls of this
aluminum foil and carefully measures the
mean area to be. rº = 249.6 ft?
Find the probability that the sample mean
area is 249.6 ft- or less if the manufacturer's
claim is true.

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?