The average miles per gallon of a particular automobile model are approximately normally distributed with a given mean = 43. 8 miles per gallon and standard deviation = 5. 1 miles per gallon. What percentage of the automobiles have an average miles per gallon between 38. 7 miles per gallon and 48. 9 miles per gallon? 68% 75% 95% 100%.

Why do you think electric energy for households is generally supplied by power plants instead of by an electric generator at home.

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The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.