The Probability of Recall in an Experiment Is Modeled By P

question 7

Multiple Choice

The probability of recall in an experiment is modeled by $P ( a \leq x \leq b ) = \int _ { a } ^ { b } \frac { 75 } { 14 } \left( \frac { x } { \sqrt { 4 + 5 x } } \right) d x , 0 \leq x \leq 1$ where x is the percent of recall. What is the probability of recalling between 50% and 70%? Round your answer to three decimal places.

• A)0.243
• B)0.206
• C)0.650
• D)0.163
• E)0.832

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