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Chapter 6.1 –30*, 36*


In addition, for Supplement-1, 30, and 36(a) also answer the following:

  1. Interpret the confidence interval;
  2. Has the assumption been met so that your interval is valid? Specify the assumption and justify your answer as to whether the assumption has or has not been met.

Inference Homework

Supplement – 1: Apartment Rental Rates: You want to rent an unfurnished two-bedroom

apartment in Dallas next year. The mean monthly rent for a random sample of 10 apartments

advertised in the local newspaper is $1050. Assume that the monthly rate in Dallas follows a

Normal distribution with a standard deviation of $220. Find a 95% confidence interval for the

mean monthly rent for unfurnished two-bedroom available in Dallas.