Question

Project I (part II) Manual Problem 1: A researcher visited 30 randomly selected Starbucks locations and recorded the number of cappuccinos sold at each coffee shop on 3/22. He summarized his data in this table: Variable Frequency 8 10 a) In this scenario, identify the following: • Variable • Individual • Sample • How many Starbucks locations sold at least 5 cappuccinos? • What percentage of Starbucks locations sold at least 5 cappuccinos? b) Draw a relative frequency histogram for the data. Use a convenient scale, label your axes and units, c) Compute the sample mean. d) Use information from part (c) to fill in the blanks in the following statement: In the random sample of 30 Starbuck locations, the average number of cappuccinos sold on 3/22 is approximately e) "Based on the sample data, we can infer that the average mumber of cappuccinos sold on 3/22 is no greater than 7." Choose the best answer below: Yes, because the data came from a representative sample. No, because the sample is not representative of the population. No, because sample mean is different from the population mean.

Answer 1

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equeny Refative Histogtam of acburk Co, 7X No of cappuccinas Sold Sampie mean 187 -623 30 In the andom samp le 30 Statbucks locaticns the average numbee & cappuccinas so ld on 3 J22 is 6 Based on the sample data, ue can fofec that the average pe number cappuccinas Sold o০3/22 ० to no greater than." Yel because the data came rem a representative Sampie

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