MARK4265Assignment #9Instructor: Yanbin Tu

Student Name:_____________________

This is an individual work!

This is an individual assignment. Please download the dataset (Assignment9Data.xlsx) and do the following work:

1.Please use the worksheet "OnlineAuction1", and create a CSV file or text file. Then, save it under one folder. The dataset lists the auction success rate for Item A (Column: SuccessRate-A), and for Item B (Column: SuccessRate-B) at eBay. You wonder if Item A's mean value is equal to 0.70. Please use R for one sample t-test. Please briefly interpret the testing result.

2.Please use the worksheet "OnlineAuction2", and create a CSV file or text file. Then, save it under one folder. The dataset lists the auction success rate for Item A and for Item B at eBay. You wonder if both rates are equal. Please use R for an independent sample mean comparison t-test. Please briefly interpret the testing result.

3.Please use the worksheet "NewDrug" this week, and create a CSV file or text file... Suppose Dr. Smith wonder if the new drug is effective or not. If the blood pressure before the experiment (Before_exp_BP) is equal to the blood pressure after the experiment (After_exp_BP), the new drug should be ineffective. If the blood pressure before the experiment (Before_exp_BP) is higher than the blood pressure after the experiment (After_exp_BP), the new drug is effective. Please help Dr. Smith to explore the answer. Please use R for a paired sample mean comparison t-test. Please briefly interpret the testing result.

4. One chocolate store has three brands available to its customers. The worksheet "Chocolate" records the data of two customers' brand choices. The store owner Jack wants to know if brand choices show no difference between the two customers.Please use R to build a Crosstable and apply a chi-square test. Please briefly interpret the testing result.

5.Please use the worksheet "StartupCost". This dataset shows you the startup costs for various stores. One of your best friends, Ashly states that the average startup costs for any type of businesses are the same. Please use R for one-way ANOVA test. Please briefly interpret the testing result. Is Ashly's statement true or false?