8 STAT243Z ZE_W1_SU23 ElementaryStatisticsl Quiz Quiz 5 The owner of a bistro called First Crush in...

Transcribed Image Text:

8 STAT243Z ZE_W1_SU23 ElementaryStatisticsl Quiz Quiz 5 The owner of a bistro called First Crush in Potsdam, NY was interested in studying the tipping patterns of his customers. He collected restaurant bills over a two week period that he believes provide a good sample of his customers. We want to find a 99% confidence interval for the average size of a tip left by customers at the First Crush Bistro. Question: What is the correct notation for the parameter that is being estimated with this interval? The correct notation is mu Question: Use the percentile method and the provided bootstrap distribution (It has 1000 bootstrap samples) to find and interpret the 99% confidence interval. Bootstrap Dotplot of Mean 50 Left Tail Two-Tail Right Tail samples 1000 mean-3.851 std. error 0.194 40 30 20 10 : 0 3.2 3.4 3.6 3.8 1 4.0 4.2 4.4 3.851 63F Clear O Search W W 10:56 PM 8/18/2023 30 20 10 : 0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 3.851 99% confidence interval and interpretation: Question: Using the formula method, find and interpret the 95% confidence interval. Submit and End 63F Clear O Search W W 10:56 PM 8/18/2023 8 STAT243Z ZE_W1_SU23 ElementaryStatisticsl Quiz Quiz 5 The owner of a bistro called First Crush in Potsdam, NY was interested in studying the tipping patterns of his customers. He collected restaurant bills over a two week period that he believes provide a good sample of his customers. We want to find a 99% confidence interval for the average size of a tip left by customers at the First Crush Bistro. Question: What is the correct notation for the parameter that is being estimated with this interval? The correct notation is mu Question: Use the percentile method and the provided bootstrap distribution (It has 1000 bootstrap samples) to find and interpret the 99% confidence interval. Bootstrap Dotplot of Mean 50 Left Tail Two-Tail Right Tail samples 1000 mean-3.851 std. error 0.194 40 30 20 10 : 0 3.2 3.4 3.6 3.8 1 4.0 4.2 4.4 3.851 63F Clear O Search W W 10:56 PM 8/18/2023 30 20 10 : 0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 3.851 99% confidence interval and interpretation: Question: Using the formula method, find and interpret the 95% confidence interval. Submit and End 63F Clear O Search W W 10:56 PM 8/18/2023