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[answered] Mario the marriage celebrant is interested in investigating


Mario the marriage celebrant is interested in investigating the average age at which people who attended university get married. A sample of 50 married couples who attended university have been randomly selected and the age at which they married was recorded. The sample mean age of marriage was calculated as 30 years old. It is known that the population standard deviation of age of marriage for all people is equal to 13 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 99% confidence interval for the mean age of marriage for people who attended university. You may find this?standard normal table?useful. Give your answers in years to 2 decimal places.

a)Upper bound =?__ ?years old

b)Lower bound =__ ??years old


 


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