What is motivation
Wanda and her sister, Siyabulela entered a lucky draw and can win R250 000 worth of prizes from a gaming magazine. Wanda sent through 15 entry forms, while Siyabulela sent through 35.
The report from the competition administrators is that 400 entries qualified, and both Wanda and Siyabulela qualified. Use this information to answer the following questions:
1.1 If Wanda wins first prize, what is the probability that Siyabulela will win second prize? (The first prize-winning entry is not put back in the container.).
1.2 What is the probability that Wanda and Siyabulela will win first and second prize?
Neurons, by some estimates, spend up to 40% of their energy maintaining a resting membrane potential of about -70 mV. Why is this a worthwhile investment? What would be the impact on our behavior if the resting membrane potential was shifted either more negative, to about -90 mV, or more positive, to about -65 mV? (Assume that everything else about the neuron, including threshold, remains unchanged).