statistics 2 questions easy

Please complete the 2 questions below.


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1) The annual rainfall in Chad is normally distributed with a mean of 600mm and a SD of 75mm.Wheat succeeds if there is less than 500 mm of rain. Based upon the rainfall information only, what is the probability that wheat will succeed in Chad?


2) Body temperatures of healthy humans are distributed nearly normally with mean 98.2F and standard deviation 0.73F. What is the minimum temperature of the top 10% of the temperature distribution?

Hint:

a) Identify the mean and the standard deviation.

b) Draw a distribution, shade the area of interest, and identify what you need to find.

c) Use the normal table at the back on the book to identify the Z-score.

d) Calculate the minimum temperature based on the Z-score.