The amt of time cold sufferes will experience symptoms is normally distributed wiht a mean of 7.5 days and a standard deviation of 1.2 days what proportion of sufferers will experience in LESS THAN 4 days , also what proportion will experience sympotms for 7-10 days
How do you set these up? Thanks so much!
3 answers
http://davidmlane.com/hyperstat/z_table.html use this, then figure with using your tables and check the result.
how do it on paper and pencil?
Get you tables. Figure the same thing on each limit. Your tables are made to read those numbers. If you don't understand, use some of the examples in your text.