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Assume the daily maximum temperature at Graaff-Reinet in the Karoo in January is a random variable with a mean of 31.5 C and a standard

Assume the daily maximum temperature at Graaff-Reinet in the Karoo in January is a random variable with a mean of 31.5 C and a standard deviation of 4 C. A January is classified as dangerously hot if the average daily maximum temperature for the month is higher than a certain level c. Find c if 1% of all Januaries are classified as dangerousl

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