Interpret the level of statistical significance for the event described.
A national survey was done. It showed that a sample of 605 men aged 25-34 watched an average of
of television a week. A sample of 503 men aged 45-54 watched an average of 19 hours of television a week. This difference is significant at the 0.05 level. Interpret the result.
◦ The older group watches more television because they have more televisions.
◦ The probability is less than 0.05 that the older group watches more television by chance alone.
◦ The probability that the difference was due to chance alone is greater than 0.05.
◦ There is not enough information to make any conclusion.
Single-gene inheritance tracked at the DNA level
Elk at the Opal terrace at Mammoth Hot Springs, Yellowstone National Park
African bush (savanna) elephant in Etosha National Park, Namibia.