6. \"1:80 \">30 The population is approximately normal. The sample mean is 85, the sample standard deviation is 4.5 and the sample size is 43. Use a = 0.10 : p: 91.5 p 191.5 The sample mean is 89.75, the sample size is 22, and the standard deviation is 7.5. Use a = 0.05 : 0: 19.25 p