Anormal distribution is a bell-shaped curve, showing the majority of the scores falling in the middle of the possible range and a few scores appearing toward the extremes of the range.

A normal distribution is a symmetrical, bell-shaped curve, showing the majority of the scores falling in the middle of the possible range and a few scores appearing toward the extremes of the range.

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.

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