n. A random sample of 250 persons showed that they spent an average of $49,000 on dental care last year with a standard deviation of $10,350. Test at the 5% significance level whether last year’s mean annual dental care expenditure per person in the parish was less than $50,000. State the hypotheses to be tested.  Using a diagra

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According to official data, the average annual expenditure on dental care in Kingston, Jamaica is at least $50,000 per person. A random sample of 250 persons showed that they spent an average of $49,000 on dental care last year with a standard deviation of $10,350. Test at the 5% significance level whether last year’s mean annual dental care expenditure per person in the parish was less than $50,000.

  1. State the hypotheses to be tested. 
  2. Using a diagram, show the critical 
  3. Calculate the value of the test 
  4. What is the conclusion? 
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