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The manager of a mutual fund company recently assumed responsibility for a large investment portfolio. She wonders whether the industry sector influences investment objectives. Her staff prepared a contingency table from a random sample of 200 common stocks. The investment objectives are growth and income, while the three industry sectors are electronics, airlines, and healthcare.

Her null hypothesis is:


"investment objective" is related to "industry sector".


"growth" and "income" are independent.


"investment objective" is independent of "industry sector".


"investment objective" is not independent of "industry sector".

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