Statistics from a​ college's climate center indicate that the city the college is in gets an average of 35.4​" of rain each​ year, with a standard deviation of 4.1​". Assume that a Normal model applies. Complete parts a through d below.
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Part 1
​a) During what percentage of years does this city get more than 39​" of​ rain?
The percentage of years with more than 39​" of rain is
  
enter your response here​%.
​(Round to two decimal places as​ needed.)
Part 2
​b) Less than how much rain falls in the driest 25​% of all​ years?
The driest 25​% of all years get at most
  
enter your response here​" of rain.
​(Round to one decimal place as​ needed.)
Part 3
​c) A university student is in this city for 7 years. Let y overbar represent the mean amount of rain for those 7 years. Describe the sampling distribution model of this sample​ mean, y overbar. Select the correct choice below​ and, if​ necessary, fill in the answer boxes to complete your choice.
A.
A Normal model with mean
  
enter your response here​" and standard deviation
  
enter your response here​"
​(Round to two decimal places as​ needed.)
B.
A Binomial model with
  
enter your response here trials and a probability of success of
  
enter your response here
​(Type integers or decimals rounded to two decimal places as​ needed.)
C.
There is no model that fits this distribution.
Part 4
​d) What's the probability that those 7 years average less than 30​" of​ rain?
The probability that those 7 years average less than 30​" of rain is
  
enter your response here.
​(Round to four decimal places as​ needed.)