Answered

If Professor Laurie Macdonald takes 15 minutes to grade the first exam and follows an 80% learning curve, how long will it take her:

a) to grade the 25th exam?

b) to grade the first 10 exams?

Answer :

Answer:

T(25) = 5.325 min

T (10) = 94.72 min

Explanation:

given data

time taken = 15 min

learning curve = 80%

solution

we use here formula for this task that is

T(n) = T × [tex](No)^{b}[/tex]    .............1

here T(n) is time taken for n unit and T is time for 1st hour and No is no of time and b is slope leaning

put here value for 25 we get

T(n) = 15 × [tex]25^{b}[/tex]

b(25) = 0.355

as leaning curve coefficient table

as here with 80% leaning curve

unit timer coefficient = 0.355

so T(25) = 15 × 0.355

T(25) = 5.325 min

and

for 10 exam

leaning curve 80% co efficient is 6.315 from table

so T (10) = 15  ×  6.315

T (10) = 94.72 min

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