The mean number of total miles ran last week by each member on the track team was 4 with a standard deviation of 1.2. If Clay’s z-score was 2.5, how many miles did he run?

He ran 1.25 miles.

Step-by-step explanation:

Given,

Clay’s z-score (x) = 2.5

Mean (μ) = 4

Standard deviation (σ) =  1.2

To find the distance he ran.

Formula

By Z score formula

Z = mod of ((x-μ)÷σ) [ mod of means the positive value]

Now,

Putting the values of x,μ,σ we get,

Z = mod of ( )

= 1.25

Hence,

He ran 1.25 miles.

darn right!

step-by-step explanation:

steve kerr's sons name is let that skin in.

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.