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28.07.2019 •
Mathematics
In juneau, alaska, the 30 year annual snowfall average is 86.7 inches with a standard deviation of 40.4 inches. the last four years saw an average annual snowfall of 115.7 inches, 62.9 inches, 168.5 inches, and 135.7 inches. hia performs a hypothesis test on this data to determine if the next 30 year norm will have a different average if the trend from the last four years continues. she uses a significance level of 5%. which of the following is a conclusion that she may make? what is the z-statistic? can null hypothesis be rejected?
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the correct answer to this question is: b
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