Carl Card-Writer’s family loves to send cards. They send cards for birthdays, graduations, flag day, even ground hog day. Last year Carl took a random sample of 64 his card writing kin. Hefound that the average number of Christmas cards sent per household for his family is 173.65.According to Hallmark, the population standard deviation for the number of cards sent per household is 12.4.   Find a 95% confidence interval for the average number of Christmas cards sent per household for all of Carl’s card writing kin.

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