In a Manufacturing Process,we Are Interested in Measuring the Average

question 154

Multiple Choice

In a manufacturing process,we are interested in measuring the average length of a certain type of bolt.Based on a preliminary sample of 9 bolts,the sample standard deviation is 0.3cm.If the lengths are normally distributed,how many bolts should be sampled in order to make us 95% confident that the sample mean bolt length is within 0.02cm of the true mean bolt length?

• A)864.36
• B)80
• C)1470
• D)3989
• E)1197

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Definitions:

Preferred Dividends

Dividends that are paid to preferred shareholders, typically at a fixed rate, before any dividends are paid to common shareholders.

Treasury Stock

Shares bought back by the issuing company, reducing the amount of outstanding stock on the open market.

Corporate Stock

Equity securities representing ownership shares in a corporation, entitling shareholders to dividends and a claim on assets and earnings.

Reacquired

Refers to the action of a company purchasing back its own shares or securities from investors.