Suppose that 21% of people have a dog, 23% of people have a cat, and 16% of people own both.  What is the probability that someone owns a dog or a cat?

A company packaging pretzels maintains quality control by randomly selecting 20 cases from each day’s production and weighing the bags. Then they open two random bags from each case and inspect the contents. The population is [population]. The population parameter of interest is [parameter]. The sampling frame is [frame] The sample for this study is [sample]  

Administrators at a university were interested in estimating the percentage of students who are the first in their family to go to college. The university student body has about 47,000 members. Identify the kind of samples used by the university administrators that: use a computer-based list of registered students, contact 200 freshmen, 200 sophomores, 200 juniors, and 200 seniors selected at random from each class.

You have been scouring The Wall Street Journal looking for stocks that are “good values”  and have calculated expected returns for five stocks. Assume the risk-free rate (rRF) is 4  percent and the market risk premium (rM – rRF) is 3.2 percent.  Which security would be the best  investment? (Assume you must choose just one.)

  [8]

  [8]

  b) Gee ‘n rede vir u antwoord op vraag 3.4.2 a)      (2)

5.1.3 a) Noem die nommer en naam van die deel waar die meeste verteerde voedsel opgeneem word. Nommer: [1]  Naam: [2] (2)

  b) Verskaf drie sigbare redes vir jou antwoord op vraag 3.2.1 a). (3)

Hierdie is ‘n ekstra oplaai opsie. Jy mag SLEGS hierdie oplaai opsie gebruik as ‘n vorige een ontbreek het of nie behoorlik gefunksioneer het nie. As jy besluit om hierdie opsie te gebruik, moet jy jou antwoord duidelik nommer volgens die ooreenstemmende vraag. Hierdie is NIE vir jou om al jou antwoorde op te laai nie. Alle antwoord moet in die quiz hierbo ingetik word.