A report noted that the average age of first time mothers in Malaysia is slightly higher than 25 years. Suppose a random
Posted: Tue Jul 05, 2022 9:56 am
A report noted that the average age of first time mothers in Malaysia is slightly higher than 25 years. Suppose a random sample of 61 first time mothers taken produced an average of 25.9 and a standard deviation of 3.2 years. Calculate a 90% confidence interval for the average age for all current first time mothers.