Null and Alternative Hypotheses · Exercise 9
A random survey of 75 long-term marathon runners revealed that the mean length of time they've been running is 17.4 years with a standard deviation of 6.3 years. If you were conducting a hypothesis test to determine if the population mean time for these runners could likely be 15 years, what would the null and alternative hypotheses be?
(a) H_0: __________
(b) H_a: __________
OpenStax, Statistics · §9.1 Null and Alternative Hypotheses · Exercise 9
No hints for this one.
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