Suppose that you wanted to determine if a drug improves students abilities to concentrate and study. A study conducted by a pharmaceutical company recruited 125 students with averge IQ’s to participate in a randomized clinical trial. The drug company split the recruits into two groups. Group 1, the placebo group was given a sugar pill. The second group, Group 2, the treatment group was given the drug. They were then asked to asked to complete a very difficult task and the amount of time they took before they quit was calculated. They claim that the placebo group will have different focus times from the treatment group. You will test the claim with a significance of .01. What is the null hypothesis?

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