Question: Using the data supplied by NOAA National Weather Service, 19,450 tornadoes struck the United States between 2000 and 2014. The percentage for each month is

Using the data supplied by NOAA National Weather Service, 19,450 tornadoes struck the United States between 2000 and 2014. The percentage for each month is listed here.

January................................ 2.4%
February.............................. 3.0%
March................................... 6.7%

April.................................... 16.9%
May..................................... 21.2%
June.................................... 17.4%
July....................................... 8.0%
August................................. 5.7%
September.......................... 5.9%

October............................... 4.9%
November........................... 4.9%
December........................... 2.8%

The monthly number of tornadoes for 2015 was recorded. Is there enough statistical evidence at the 5% significance level to infer that the percentages have changed?

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