If z is the positive number such that the interval within z standard deviations of the mean
Question:
a. Explain why this value of z is about 0.67.
b. Explain why for any normal distribution the first and third quartiles equal μ - 0.67σ and μ + 0.67σ.
c. The interquartile range, IQR, relates to σ by IQR = 2 × 0.67σ. Explain why.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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a If the interval contains 50 of a normal distribution ...View the full answer
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Related Book For 
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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