Sandy paid 30 dollars for a blouse. Cleaning cost after each wear is about $0.50. Sandy thinks she can wear the blouse 50 times before it worn out. What was the cost per wear? How many times should Sandy wear the blouse to reach a cost per wear of $1?

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain