Question

The proportion of students in a psychology experiment who could remember an eight-digit number correctly for t minutes was :

0.9 − 0.3 ln(t) (for t > 1).
Find the proportion that remembered the number for 5 minutes. (Round your answer to one decimal place.)

Answer 1

Explanation:

The proportion of students in a psychology experiment who could remember an eight-digit number correctly for t minutes was :

0.9 − 0.3 ln(t)

the proportion that remembered the number for 5 minutes, we would substitute t = 5 into expression, 0.9 − 0.3 ln(t). It becomes

0.9 − 0.3 ln5

= 0.9 - 0.3 × 1.60943791243

= 0.9 - 0.4828

= 0.4172

Approximately 0.4 to 1 decimal place