A college has over 5,000 students, 10, percent of which are left-handed. A new lecture hall is being planned that will seat 300 students, and college officials want to be sure there are enough left-handed desks. Suppose we randomly select groups of 300 students from this college. What are the mean and standard deviation of the number of left-handed students in each group of 300?
You may round your answers to the nearest tenth.
mean:
standard deviation:

a student has to project a three times magnified image of a candle flame on a wall .name the type of the lens (converging or diverging) required for the purpose. if the candle flame is at a distance of 6 metre from the wall ,find the focal length of the lens.

Step-by-step explanation:

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