Please answer question B The average height of an adult male in the U. S. is 69.
ID: 3182459 • Letter: P
Question
Please answer question B
The average height of an adult male in the U. S. is 69.5 inches with a standard deviation of 2 inches. a) Sketch the normal curve and fill in the standard deviation numbers and percentages for the scenario above. Use the diagram to answer questions b-f. b) What percentage of adult US men have a height that is between 2 standard deviations below the mean and 1 standard deviation above the mean? c) What percentage of adult US men have a height that is between 65.5" and 71.5"? d) What percentage of adult US men have a height that is less than 67.5 inches? e) What percentage of adult US men have a height that is between 71.5" and 75.5"? In a group of 90 adult US men, how many would you expect to be between 71.5" and 75.5" tall? f) What percentage of adult US men have a height that is between 65.5 and 69.5 inches? In a group of 90 adult US men, how many would you expect to be between 65.5 and 69.5 inches tall?Explanation / Answer
as from normal std table : P(Z<-2) +P(Z>1)= P(Z<-2)+1-P(Z<1) =0.02275+1-0.8413=0.1814
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