这是一篇美国的统计学讲解作业代写

 

Q1 Mary examined a random sample of Friday withdrawals from a college campus ATM. She hypothesized that the mean was less than $100. The results shown below are from MegaStat. What would Mary conclude from this test? Explain carefully.

Q2 Julia hypothesizes that fewer than 90 percent of her Visa purchases are under $100. She examines a random sample of her recent purchases, and performs a test. The results shown below are from MegaStat. What would Julia conclude from this test?

Explain carefully.

Q3 Based on some ideas expressed in her psychology class, Frieda decided to test a hypothesis about the possible relationship between political views and the number of traffic tickets received. She used a survey of 189 statistics students to prepare the cross-tabulation and chi-square analysis shown below. Discuss Frieda’s results using concepts you learned in this chapter. Note any potential problems or concerns in the analysis,and suggest possible improvements.


EasyDue™ 支持PayPal, AliPay, WechatPay, Taobao等各种付款方式!

E-mail: easydue@outlook.com  微信:easydue


EasyDue™是一个服务全球中国留学生的专业代写公司
专注提供稳定可靠的北美、澳洲、英国代写服务
专注提供CS、统计、金融、经济、数学等覆盖100+专业的作业代写服务