A Sample of 250 Adults Tried the New Multigrain Cereal

Multiple Choice

A sample of 250 adults tried the new multigrain cereal Wow! A total of 187 rated it as excellent. In a sample of 100 children,66 rated it as excellent. Using the 0.1 significance level,the researcher wishes to show that adults like the cereal better than children. What test statistic should we use to compare the ratings of adults and children?

A) A z-statistic
B) A right one-tailed test statistic
C) A left one-tailed test statistic
D) A t-statistic