6.28 Tax Audit How does the Canada Revenue Agency decide on the percentage of income tax returns to audit for each province? Suppose they do it by ran- domly selecting 50 values from a normal distribution with a mean equal to 1.55% and a standard deviation equal to 0.45%. (Computer programs are available for this type of sampling.)

a. What is the probability that a particular province will have more than 2.5% of its income tax returns audited?

b. What is the probability that a province will have less than 1% of its income tax returns audited?