Sabrina’s father is the limo driver to the President and CEO of RSG, an investment bank in New York. Sabrina buys RSG stock whenever her father overhears information indicating increased profits at RSG, and sells RSG stock whenever her father overhears information indicating decreased profits at RSG. If she can generate consistent abnormal returns in this manner then this is a failure of .

If she can generate consistent abnormal returns in this manner then this is a failure of "strong form efficiency".

Explanation:

The most rigorous variant of the Efficient Market Hypothesis (EMH) investment principle, which conveys that all knowledge in a market, public or private is compensated for in the value of a product is understood as "strong form efficiency".

Strong form efficiency experts claim that even insider knowledge does not give a benefit to an investor. This extent of market efficiency indicates that profits beyond ordinary yields can not be noticed irrespective of how much study or information stakeholders have direct exposure to.

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"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"