Question 2 (1 point) According to a study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file an income tax return. The distribution of times follows a normal distribution with a standard deviation of 80. A random sample of 40 tasup ayers is picked Calculate the z-score for 320 minutes 03 2.35 O -1.12 -0.79 Question 3 (1 point) According to a study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file an income tax return. The distribution of times follows a normal distribution with a standard deviation of 80. A random sample of 40 tasep ayers is picked What is the likelihood the sample mean is less than 320 minute:? O 0.21 0.01 O 0.77 0.50