Mathematics, 06.05.2020 02:42 squawk1738
Historically, a certain region has experienced 92 thunder days annually. (A "thunder day" is day on which at least one instance of thunder is audible to a normal human ear). Over the past fifteen years, the mean number of thunder days is 72 with a standard deviation of 38. Can you conclude that the mean number of thunder days is less than 92? Use the level of significance.
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Historically, a certain region has experienced 92 thunder days annually. (A "thunder day" is day on...
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