Statistic Assignment
STAT 509 Assignment# 2 Name____Danyah Aldailami______
Instructions:
1. Due Date
· April 16 @ 11:50pm
2. Assignment submission:
· When you submit an electronic file (assignment) you must use the following format: This is for: LAST NAME (in upper case), your first name, the course code, activity/assignment number and file format
· For example: SMITHJohn-STAT509-A1.doc
Assignment:
Assume that serum sodium levels of healthy adults are normally distributed with a mean of 141 mEq/L and a standard deviation of 3mEq/L. Suppose we take a sample of 35 healthy adults. Find the following probabilities (show your work):
1. What is the probability that a healthy adult will have a serum sodium value above 147mEq/L?
2. What is the probability that a healthy adult will have a serum sodium value below 130 mEq/L?
3. What is the probability that a healthy adult will have a serum sodium value between 132 and 150mEq/L?
4. What serum sodium level is necessary to put someone in the top1% of the distribution?
5. What serum sodium level is necessary to put someone in the bottom 10% of the distribution?
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