Growth spurt:It is generally known that boys grow at an unusually fast rate between the ages of about 12 and 14

. Following are heights, in inches of

10

boys, measured at age

12

and again at age

14

. Can you conclude that the mean increase in height is less than

5.6

inches? Let

1

represent the mean height at age

14

and =d =1 - 2. Use the

a = 0.01 level and the P

-value method with the TI-84 Plus calculator.

	Height
Age 12	68.3	63.0	64.4	58.2	59.7	60.2	63.7	60.2	62.7	55.6
Age 14	73.6	67.7	69.2	64.6	66.1	65.9	68.3	65.2	67.9	61.7

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Part 1 of 4

(a) State the appropriate null and alternate hypotheses.

H0: H1: This hypothesis test is a (Choose one) test. left, right, or two tailed test?