Question 4 (1 point) According to a study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file an income tax retum. The distribution of times follows a normal distribution with a standard deviation of 80 A random sample of 40 taspayers is picked Calculate the z-score for 350 -0.5 1.58 2.75 -1.3 Question 6 (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 taxpayers is picked Calculate the z-score for 345 minutes 2.70 -0.90 1.85 1.19