At 5% level, is the economist claim true? Assume the variance are equal.

please show all steps and please write out complete SENTENCES as to how you did each step. And explaining what you did to get the answer!!! Thanks

Solve number 5 and explain

The response rate of a survey is the proportion of all people who were selected but did not complete the survey.    True  False

Hi please see attached.  Thankyou!

The St. Louis Cardinals would like to improve their post season performance this year. They have hired you as a consultant to study the team during winter practice and help their analytics team to fine tune their on-field performance. Armed with your recent knowledge of sampling and estimation, you set to collect data and provide feedback to the team. How can you help the team from what you have learned in this chapter? Describe your sampling plan? What data would you like to collect, the parameter(s) of interest. How you would use the confidence interval to inform the team?

Please solve for A, B, and C

Please show the full solution and proper notation and terminology. 1. A production manager wants to estimate the proportion of defective parts received from a new supplier. She believes that defective proportion is no more than 0.20 and wants to be within 0.02 of the true proportion of defective parts with 90% level of confidence. How large a sample should she take?  thanks.

Below is a research question, please answer the following question.  After it is solved, you can simply replace the highlighted sentences (the format you should follow, please follow the highlighted sentence format) with the correct answer.

Please Solve using R calculator or excel. Show all work. Thank You.