7.3.15-T Question Help Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P. M. on a weekday. Use the sample data to construct an 80% confidence interval estimate of the population standard deviation. 64 61 61 57 61 53 59 58 59 69 60 66 Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h​

not solvable

step-by-step explanation:

we need more information, or at least an

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this