A Company in Maryland Has Developed a Device That Can

question 94

Multiple Choice

A company in Maryland has developed a device that can be attached to car engines,which it believes will increase the miles per gallon that cars will get.The owners are interested in estimating the difference between mean mpg for cars using the device versus those that are not using the device.The following data represent the mpg for independent random samples of cars from each population.The variances are assumed equal and the populations normally distributed. Given this data,what is the critical value if the owners wish to have a 90 percent confidence interval estimate?

• A)t = 2.015
• B)t = 1.7823
• C)z = 1.645
• D)z = 1.96

---

Definitions:

Useless Meetings

Gatherings or assemblies that fail to achieve productive outcomes or objectives.

Invitees' Input

Contributions, feedback, or suggestions provided by individuals who have been invited to participate in a particular process or event.

Meeting's Purpose

The specific reason or objectives for which a meeting is convened, guiding its agenda and discussions.

Number of Meetings

The count or frequency of formal gatherings or assemblies for the purpose of discussion or decision-making within an organization or group.