Suppose the age a student graduates from NYU is Normally distributed. If the mean age is 23.1 years and the standard deviation is 3.1 years, what is the probability that 6 randomly selected students had a mean age at graduation that was greater than 26? 2. 4 points Assume women's heights are normally distributed with a mean of u=63.6 in and a standard deviation of 2.5 in. a) If 1 woman is randomly selected, find the probability that her height is greater than 63 inches. b) If 100 women are randomly selected, find the probability that they have a mean height greater than 63 inches.​

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step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

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