Perform a Hypothesis Test for the Population Mean

question 49

Essay

Perform a hypothesis test for the population mean. Assume that preliminary data analyses indicate that it is reasonable toapply the z-test. Use the critical-value approach.
-A car insurance company has determined that the mean annual car insurance cost for a family in the town of Watlington is $1716. A researcher wants to perform a hypothesis test to determine whether the mean insurance cost for a family in the town of Putford is higher than this. The mean insurance cost for a random sample of 32 families in Putford was $1761. At the 10% significance level, do the data provide sufficient evidence to conclude that the mean insurance cost for a family in Putford is higher than $1716, the mean cost for a family in Watlington.? Assume that the population standard deviation is $35.50.

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Definitions:

Yield Maturity

The term generally refers to the date when a bond or other fixed-income security matures, at which point the issuer is obligated to pay the principal amount back to the bondholders.

Asset Pricing

The method of determining the fair value of assets, taking into account various risk factors and expected returns.

Bond Indenture

A legal contract between the bond issuer and the bondholders, detailing the terms of the bond, such as the interest rate, maturity date, and collateral.

BB Credit Rating

Indicates a credit rating assigned by rating agencies to a borrower that signifies higher risk and lower credit quality compared to an investment-grade rating.