THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 61

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An airline is considering changing the color scheme of its planes' interiors.A focus group of 220 people was asked which color scheme they preferred.Of those who expressed a preference,87 preferred the new color scheme,while 121 preferred the old.
-A recent survey examined the first-year salaries of 178 MBA graduates.The kurtosis for this data set was calculated to be 3.56,with a skewness of 0.29.Is there sufficient evidence to reject the null hypothesis that first-year salaries for MBA graduates are normally distributed?

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Definitions:

Orange Juice

A beverage made from the extraction or pressing of the natural liquid contained in orange fruits.

Troy Ounce

A unit of measure for precious metals that is approximately 31.1 grams, differing from the standard ounce which is 28.35 grams.

Silver Futures

Contracts for the future delivery of silver at a price agreed upon today, used for hedging and speculative trading.

Contract

A legally binding agreement between two or more parties that defines and governs the rights and duties of the parties to the agreement.