Identify the dependent and independent variable in the following hypothesis: There is a positive relationship between name recognition and campaign spending. Using the two variables, state the null hypothesis. Why is the null hypothesis important?
What will be an ideal response?
(i) The dependent variable is “name recognition”; the independent variable is “campaign spending”; (ii) H0 = there is no relationship between name recognition and campaign spending. (iii) The null hypothesis is important because it is what we are asking with tests of statistical significance; we are testing the probability that the null hypothesis is correct. Because we cannot guarantee a hypothesis is right, it must be falsifiable.
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Conservatives dominate talk radio primarily because
A) they have the funding to do so. B) they feel they have a greater need for alternatives to the mainstream media. C) they receive official support from the Republican National Committee. D) they simply like radio more than television. E) they are granted more licenses from the Federal Communications Commission.
How can Type II errors be reduced?
a) decreasing sample size b) homogeneous population c) increasing sample size d) heterogeneous population