The probability that a person will remember between 100 a % and 1 00b% of material learned in an experiment is P a , b = ∫ a b 15 4 x 1 − x d x Where x represents the proportion remembered. (See figure.) (a) For a randomly chosen individual, what is the probability that he or she will recall between 50% and 75% of the material? (b) What is the median percent recall? That is, for what value of b is it true that the probability of recalling 0 to b is 0.5? Figure for 111
The probability that a person will remember between 100 a % and 1 00b% of material learned in an experiment is P a , b = ∫ a b 15 4 x 1 − x d x Where x represents the proportion remembered. (See figure.) (a) For a randomly chosen individual, what is the probability that he or she will recall between 50% and 75% of the material? (b) What is the median percent recall? That is, for what value of b is it true that the probability of recalling 0 to b is 0.5? Figure for 111
Solution Summary: The author calculates the probability that selected person will recall 50%and 752% of the material, where probability is 0.353.
find the zeros of the function algebraically:
f(x) = 9x2 - 3x - 2
Rylee's car is stuck in the mud. Roman and Shanice come along in a truck to help pull her out. They attach
one end of a tow strap to the front of the car and the other end to the truck's trailer hitch, and the truck
starts to pull. Meanwhile, Roman and Shanice get behind the car and push. The truck generates a
horizontal force of 377 lb on the car. Roman and Shanice are pushing at a slight upward angle and generate
a force of 119 lb on the car. These forces can be represented by vectors, as shown in the figure below. The
angle between these vectors is 20.2°. Find the resultant force (the vector sum), then give its magnitude
and its direction angle from the positive x-axis.
119 lb
20.2°
377 lb
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