The hemoglobin count (HC) in grams per 100 milliliters of whole blood is approximately normally distributed with a population mean of 14 for healthy adult women. Suppose a particular female patient has had 9 laboratory blood tests during the past year. The sample readings showed an average HC of 16.49 with a standard deviation of 2.19. Does it appear that the population average HC for this patient is not 14?

(a) State the null and alternative hypotheses: (Type "mu" for the symbol

, e.g.mu>

>1for the mean is greater than 1,mu<

<1for the mean is less than 1,mu not = 1for the mean is not equal to 1)

0

H0:

HA:

(b) Find the test statistic, t =