True or False: V/rite True if the statement is true and False if not. 11. The area under the normal curve is 1. 12. The normal curve is a bell- shaped. 13. There is a perfect symmetry about the mean of the normal curve. 14. The proportion 0.6826 is the same as 68.26%. 15 The spread of the curve cenends on the rnean of the distribution

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