In a/an __________, the researcher samples a group of people, asks one or more questions, and ...

In a/an __________, the researcher samples a group of people, asks one or more questions, and records the responses.
 
  A) published source B) observational study
  C) survey D) designed experiment

Q. 2

The business college computing center wants to determine the proportion of business students who have personal computers (PC's) at home. If the proportion differs from 25, then the lab will modify a proposed enlargement of its facilities.
 
  Suppose a hypothesis test is conducted and the test statistic is 2.4. Find the P-value for a two-tailed test of hypothesis.
  A) 0.4918 B) 0.4836 C) 0.0082 D) 0.0164

Q. 3

In a/an __________, the researcher exerts strict control over the units in the study.
 
  A) published source B) designed experiment
  C) observational study D) survey

Q. 4

The National Association of Realtors estimates that 23 of all homes purchased in 2004 were considered investment properties.
 
  If a sample of 800 homes sold in 2004 is obtained what is the probability that at most 200 homes are going to be used as investment property?
  A) 0.5935 B) 0.9099 C) 0.0934 D) 0.4066

Q. 5

Decide whether the experiment is a binomial experiment. If it is not, explain why. Survey 850 investors to see how many different stocks they own. The random variable represents the number of different stocks owned by each investor.
 
  What will be an ideal response?

Q. 6

Sometimes the data of interest has already been collected for you and is available in a/an __________.
 
  A) survey B) observational study
  C) published source D) designed experiment