Assume That a Simple Random Sample Has Been Selected from a Normally

question 22

Essay

Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use either the traditional method or P-value method as indicated.
Identify the null and alternative hypotheses, test statistic, critical value(s)or P-value (or range
of P-values)as appropriate, and state the final conclusion that addresses the original claim. A
public bus company official claims that the mean waiting time for bus number 14 during peak
hours is less than 10 minutes. Karen took bus number 14 during peak hours on 18 different
occasions. Her mean waiting time was 7.6 minutes with a standard deviation of 2.3 minutes.
At the 0.01 significance level, test the claim that the mean waiting time is less than 10
minutes. Use the P-value method of testing hypotheses.

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Definitions:

Cooperative Federalism

A concept of federalism where national, state, and local governments interact cooperatively and collectively to solve common problems, rather than making policies separately.

Layer Cake

A cake having multiple layers separated by filling or frosting, known for its decorative appearance and variety in flavors.

Sponge Cake

A light, porous cake made with flour, sugar, and eggs, often leavened solely by the air whipped into the egg mixture.

Fruit Cake

A cake made with candied or dried fruits, nuts, and spices, commonly served during Christmas and other celebrations.