Untitled Question * 1 point
1) Javier's score on a science test is equal to
the upper quartile value of all the scores on
the test. Based on this information, which
statement about Javier's score is most likely
to be true?
A. Javier's Score is 75
B. Javier's score is greater than 75 other scores
C. Javier's score is the same as 75% of all the scores.
D. Javier's score is greater than 75% of all the scores

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.