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Question 17 2 pts Referencing the information provided in the previous question, the correct sampling distribution to use when developing the confidence interval to estimate the mean ( u ) daily cookie sales is: O a discrete probability distribution. a frequency distribution. the normal (z) distribution. the t-distribution. Question 18 2 pts Referencing the information provided in question #16, what would be the interval estimate for the mean cookie sales if the troop leader wants to be 98% confident in her estimate? Formula Choices: Mean + z (0 : n) Mean + z (s : n) Mean + t (s + n) $12.50 - $17.50 $13.83 - $16.17 $13.00 - $17.00 $14.17 - $15.83