According to the National Health Statistics report, the mean height of all adult (age 18 years and older) males in the United States in 69.4 inches.A random sample of 300 men aged 60 - 69 years old has a mean height of 69.0 inches, with a standard deviation of 2.65 inches.At = 0.10, can we conclude that the population of older (aged 60 - 69 years old) men are shorter than the population of all men in the USA?

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