Sophia and Hector are captains of their track and
ector are captains of their track and field team. As captains,
they help their teammates train for the different events.
1. Sophia records the heights of the teammates competing in the nign
jump event and the heights of their best jumps.

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

If 25% of y is 30, what is 60% of y?

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