1. Gaurav was conducting a test to determine if the average amount of medication his patients were taking was similar to the national average. He wants to use a 5% significance levelfor his test to help ensure that his patients do not receive too little or too much medication.

If Gaurav were to conduct a test, what probability value would indicate that his null hypothesis (that there is no significant difference between the amount of medication Gaurav's patients are receiving and the national average) would be rejected?

• 2.45%
• 96.78%
• 56.45%
• 15.23%

2.Jean works for the government and was conducting a survey to determine the income levels of a number of different neighborhoods in a metropolitan area. Based on national data, Jean knows that the mean income level in the country is $40,000, with a standard deviation of $2,000.Jean selected threeneighborhoods and determined the average income level.

What is the probability that the average income level in the neighborhoodswas more than $41,000?

• 69%
• 50%
• 31%
• 5%