The owner of a large car dealership believes that the financ…

The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership. The dealership has historically had 800 customers per day. The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. Assume that the population standard deviation is 350. At the 5% significance level, the decision is __________

The daily exchange rates between the euro (EUR) and the Brit…

The daily exchange rates between the euro (EUR) and the British pound (GBP) are approximately normally distributed with a mean of 1.16 euros (to pounds) and a standard deviation of 0.038 euros. What is the probability that a randomly selected exchange rate will be more than 1.2 euros?