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Are female personal trainers, on average, younger? A fitness center employs 20 personal trainers. Here are the ages in years of the female and male personal trainers working at this center:
Male
25
26
23
32
35
29
30
28
31
Female
21
22
20
24
19
(a) Make a back-to-back stemplot. Do you think the difference in mean ages will be significant?
(b) A two-sample t test gives P
(c) What do you conclude about using the t test? What do you conclude about the mean ages of the trainers?
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Comparative Advantage a. Explain how the theory of comparative advantage relates to the need for international business.
Suppose now that attempts are made until 3 successful launchings have occurred. What is the probability that exactly 6 attempts will be necessary?
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