Author Question: Conduct a full hypothesis test and determine if the given claim is supported or not supported at the ... (Read 60 times)

mspears3 · **on:** Jan 18, 2020

Conduct a full hypothesis test and determine if the given claim is supported or not supported at the 0.05 significance level. Round all amounts and standard scores to two decimal places.

In 1990, the average duration of

telephone calls originating in one town was

A

telephone company wants to perform a hypothesis test to determine whether the average duration of

phone calls has changed from the 1990 mean of

The mean duration for a random sample of

originating in the town was

Test whether the claim that the mean call duration is less than the 1990 mean of 9.8 minutes is supported or not supported. Assume that

◦ supported
◦ not supported

Smiles0805 · **Reply #1 on:** Jan 18, 2020

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