A researcher would like to test the claim that 9 out of 10 doctors prefer Brand X. A sample of 60 doctors is obtained and each is asked to compare Brand X with another leading brand. The data show that 48 of the doctors picked Brand X. If these data are evaluated using a chi-square test for goodness of fit, what is the expected frequency for Brand X?
a. 6 c. 48
b. 12 d. 54
D
You might also like to view...
Since one of the main goals of playing Scrabble is to use your letters to form long words (the longer the word, the more points you score), Scrabble can BEST be described as a game that involves a problem of
a. arrangement. b. transformation. c. functional fixedness. d. inducing structure.
In the analysis of variance we will assume that
a. the populations are normally distributed. b. the populations follow a rectangular distribution. c. the populations all have completely different shapes. d. There is no assumption about the shape of the population.
The technique of quota sampling is most similar to ____ sampling
a. simple random b. stratified random c. cluster d. systematic
Which of the following is NOT an example of an antidepressant?
a. Haldol b. Zoloft c. Prozac d. Elavil