SOLUTION: Please help I have been working on this problem for the last hour...I am so confused...Thank you for your time its greatly appreciated
A set of data is normally distributed with
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-> SOLUTION: Please help I have been working on this problem for the last hour...I am so confused...Thank you for your time its greatly appreciated
A set of data is normally distributed with
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Question 487044: Please help I have been working on this problem for the last hour...I am so confused...Thank you for your time its greatly appreciated
A set of data is normally distributed with a mean of 100 and standard deviation of 15. SHOW ALL WORK
What would be the standard score for a score of 115?
What percentage of scores is between 100 and 115?
What would be the percentile rank for a score of 115?
You can put this solution on YOUR website! Use the formula z = (X - M)/s.d
a) z = (115 - 100)/15 = 15/15 = 1
b) P ( 100 < X < 115) = P((100 - 100)/15
c) Draw a picture and use 68%-95%-99.5% rule to find about 34% of the students who score 115.
