In order to estimate the average electric usage per month, a sample of 196 houses was selected and their electric usage was determined. a. Assume a population standard deviation of 350 kilowatt-hours. Determine the standard error of the mean. [popstddev]  b. With a .99 probability, determine the margin of error. [answerb] c. If the sample mean is 2100 kWh, what is the 98% confidence interval estimate of the population mean? [answer1] to [answer2] kWh  

The top management team of a company includes the chief operating officer (COO) of the company.

Which of the following offers three core certifications: Professional in Human Resources (PHR), Senior Professional in Human Resources (SPHR), and Global Professional in Human Resources (GPHR)?

Which of the following established, for the first time, the workweek in the United States as 40 hours per week?

Contemporary HR managers are increasingly regarded as second-class corporate citizens.

Which of the following departments within an organization was usually thought of as a staff function?

The PATRIOT Act prohibits the government or law enforcement agencies from collecting information about any citizen of the United States.

Why is there a blind spot in vision? Select all that apply.

It is not possible for two people of the same age to have very different near point measurements.

A person has conductive hearing loss in the right ear. Which of the following would be expected Rinne’s test results?