The Customer Help Center in Your Company Receives Calls from Customers

question 66

Multiple Choice

The customer help center in your company receives calls from customers who need help with some of the customized software solutions your company provides.Your company claims that the average waiting time is 7 minutes at the busiest time,from 8 a.m.to 10 a.m.,Monday through Thursday.One of your main clients has recently complained that every time she calls during the busy hours,the waiting time exceeds 7 minutes.You conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes.If the population standard deviation is known to be 4.2 minutes,and α = 0.05,the appropriate decision is:

• A) increase the sample size
• B) reduce the sample size
• C) fail to reject the 7-minute average waiting time claim
• D) maintain status quo
• E) reject the 7-minute claim

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Definitions:

Margin of Error

A measure of the uncertainty or potential error in the results of a poll, survey, or experiment, often expressed as a percentage.

Body Dysmorphic Disorder

A mental disorder characterized by obsessive focus on a perceived flaw in appearance, sometimes leading to compulsive behaviors and mental distress.

Muscle Dysmorphia

A psychological disorder in which an individual obsesses over the belief that they are not sufficiently muscular or lean.

Waist-To-Hip Ratio

A measure of fat distribution, calculated by dividing the circumference of the waist by the circumference of the hips.