Simon Cinema wants to know what the audience thought of tonight’s advanced screening of a heralded psychological thriller called ""I Can’t Sleep."" He and his research assistants stand outside the theatre exit and ask every fifth person leaving the theatre to answer several questions about their impression of the movie. Simon is using: systematic sampling. stratified random sampling. convenience sampling. purposive sampling.

The value √10 and √15 are plotted on the number line

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.

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.