Question: When calculating the 95% confidence interval for the mean for a sample of 246 customers, the average order is $85, and the population 5 tandard

When calculating the 95% confidence interval for the mean for a sample of 246 customers, the average order is $85, and the population 5 tandard deviation is $16. From this sample you want to establish the confidence interval for the average order of the population who buys from your company. Conlinuous data:-large samples: For this type of data one uses the normal distribution to calculate the confidence interval for the mean Xoar +Z2Csqrt(n) where Xbar = Sample average = Population standard deviation n= Sample size Z a/2 = Normal distribution value for a desired confidence level What is the lower level number of the confidence interval? (One decimals) What is the upper level number of the contidence interval? (One decimats) Calculale a 90% confidence interval for a proportion for a sample of 120 units that had 24 bad units. Consider finding a bad unit a success Use the formula p+Z alpha/2 * Sqrt ((p(1p))) Three decimals for all answers. What is your Z alpha/2 value? What is your phat? What is your margin of error? What is your low value in the confidence interval? What is your high value in the confidence interval? QUESTION 11 You have joined a large agricultural producer. One of the division sells hay. The average weight of a small bale of hay is quoted to the customs

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