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Mathematics, 12.03.2021 18:50, jazmine8194
Mario the marriage celebrant is interested in investigating the average age at which people who attended university get married. A sample of 55 individuals who attended university and have been married once has been randomly selected and the age at which each person married was recorded. The sample mean age of marriage was calculated as 31 years old. It is known that the population standard deviation of age of marriage for all people is equal to 11 years. It is assumed that this standard deviation will also apply specifically to the age of marriage for people who attended university. Calculate the upper and lower bounds of the 95% confidence interval for the mean age of marriage for people who attended university. Give your answers in years to 2 decimal places.
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