Solve the triangle a=? b=7m c=10m

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

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.