Question

In: Statistics and Probability

A reading group claims that Americans read more as they grow older. A random sample of...

  1. A reading group claims that Americans read more as they grow older. A random sample of 45 Americans age 60 and older read for a mean length of 62.8 minutes per day, with a population standard deviation of 18.3 minutes per day. A random sample of 88 Americans between ages 50 and 59 read for a mean length of 53.9 minutes per day, with a population standard deviation of 23.1 minutes per day. At the 0.01 level of significance, test the claim that the mean time spent reading per day by Americans age 60 and older is longer than the mean time spent reading per day by Americans between the ages of 50 and 59.
  1. State the hypotheses and identify the claim.
  1. Find the critical value(s)

  1. Compute the test value.

  1. Make the decision to reject or not reject the null hypothesis.

  1. Summarize the results.

Solutions

Expert Solution

orchestra answered 2 years ago
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