Question 38 The IE Dept. is interested in the mean age ofa certain population. A random sample of 10 individuals drawn from the population has a mean of 2?. Assuming that the population is approximately normally distributed with variance 20. can we conclude that the mean is less than 30 years ? {$0.10} 1 CA) No, the mean age is equal to SB. No, because the mean age is more than 30 6:) Yes, because the mean age is less than equal to 30. Yes, the mean age is smaller than 30