Critical values for each of the following situations, find the critical value(s) for z or t. h 0 : p = 0.5 vs. h a : p ≠ 0.5 at α = 0.05 . h 0 : p = 0.4 vs. h a : p > 0.4 at α = 0.05 . h 0 : μ = 10 vs. h a : μ ≠ 10 at α = 0.05 ; n = 36 . h 0 : p = 0.5 vs. h a : p > 0.5 at α = 0.01 ; n = 345 . h 0 : μ = 20 vs. h a : μ < 20 at α = 0.01 ; n = 1000 .

How do you convert 1.27 to a percentage

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

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.