Question

Five years ago, the average apartment rent in southwest Virginia was $895 per month. A recent study of 180 randomly selected apartments found that the average rent was $915, with a standard deviation of $227.50. Do the data enable us to conclude that rents have increased? Using the 98% degree of confidence, the rejection rule is:

Answer #1

Rehection rule

If t > 2.069, reject H0

Five years ago, the average apartment rent in southwest Virginia
was $895 per month. A recent study of 180 randomly selected
apartments found that the average rent was $915, with a standard
deviation of $227.50. Do the data enable us to conclude that rents
have increased? What is the 97.5% confidence interval for the
population mean?

Five years ago, the average apartment rent in southwest Virginia
was $895 per month. A recent study of 180 randomly selected
apartments found that the average rent was $915, with a standard
deviation of $227.50. Do the data enable us to conclude that rents
have increased? An appropriate set of null and alternative
hypotheses to use in order to determine whether the average rent
has increased is:

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