A student group has a mean age of 22 years with a sd=3.6 years.  Assume ages are normally distributed. What integer represents -infinity  what integer represents infinity  Give probabilities as 2-decimal percentages and DO Not include the % symbol  what is P(<19)    What is P(17

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A student group has a mean age of 22 years with a sd=3.6 years.  Assume ages are normally distributed.

What integer represents -infinity 

what integer represents infinity 

Give probabilities as 2-decimal percentages and DO Not include the % symbol 

what is P(<19)   

What is P(17<x<23)   

If a group of 18 students is selected, what is P(<24) 

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