Exhibit 9-6 a Random Sample of 100 People Was Taken. Eighty of Eighty

question 102

Essay

Exhibit 9-6
A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 75%.
-A lathe is set to cut bars of steel into lengths of 6 centimeters. The lathe is considered to be in perfect adjustment if the average length of the bars it cuts is 6 centimeters. A sample of 121 bars is selected randomly and measured. It is determined that the average length of the bars in the sample is 6.08 centimeters. The population standard deviation is 0.44 centimeters. Determine whether or not the lathe is in perfect adjustment. Use a .05 level of significance.

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Definitions:

Note Receivable

A financial asset representing a written promise to receive a specific amount of money at a future date.

Dishonored Note

A promissory note that has not been paid by the maker at the time of maturity, resulting in default.

Promissory Note

A financial document in which one party promises in writing to pay a determinate sum of money to another, either at a fixed or determinable future time or on demand.

Interest

The cost of borrowing money, typically expressed as an annual percentage of the principal amount.