A television station is interested in predicting whether voters arc in favor of

Question

A television station is interested in predicting whether voters arc in favor of an increase in the state sales tax. It asks its viewers to phone in and to indicate whether they support or are opposed to an increase in the stale sales tax in order to generate additional revenue for education. Of the 2633 viewers who phoned in, 1474 (55.98%) were opposed to the increase. The population of interest is all people who will vote on the sales tax increase on the day of the vote. all regular viewers of the television station who own a phone and have participated in similar phone surveys in the past. the 2633 viewers who phoned in. the 1474 viewers who were opposed to the increase. The sampling design is convenience sample. voluntary response sample. simple random sample. none of the above. 100 volunteers who suffer from severe depression are available for a study. 50 are selected at random and arc given a new ding which is thought to be particularly effective in treating severe depression. The other 50 are given an existing drug for treating severe depression. A psychiatrist evaluates the symptoms of all volunteers after four weeks in order to determine if there has been substantial improvement in the severity of the depression. The study would be double blind if A group of 40 adults who suffer from severe migraines were asked to take a dose of vitamin B each day. After a period of 2 years, 25 of the adults reported that their migraines were less severe. From this information alone you can conclude:

Explanation / Answer

1) we are looking at the viewers of that tv station. so answer is b.

since it is voluntary call for the viewers, answer is b.

2) answer is c.

3) since there is nothing to compare, the answer is d.

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