Mathematics, 25.11.2021 05:20 sophiaa23
The manager of a sports arena wants to learn more about the financial status of the people who are attending an NBA basketball game. He would like to give a survey to a representative sample of the more than 20,000 fans in attendance. Ticket prices for the game vary a great deal: seats near the court cost over $100 each, while seats in the top rows of the arena cost $25 each. The arena is divided into 30 numbered sections, from 101 to 130. Each section has rows of seats labeled with letters from A (nearest the court) to ZZ (top row of the arena).
1. Which would be a better way to take a stratified random sample of fans: using the lettered rows or the numbered sections as strata? Explain.
2. Which would be a better way to take a cluster sample of fans: using the lettered rows or the numbered sections as clusters? Explain.
Answers: 1
Mathematics, 21.06.2019 18:00
Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.
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Mathematics, 21.06.2019 18:30
Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.
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