TABLE 7-1 Times Spent Studying by Students in the Week Before Final

question 219

Short Answer

TABLE 7-1
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of 4 students was taken from a population of 50 in order to estimate the mean study time for the population of all students. Use the finite population correction.
-Referring to Table 7-1, what is the probability that the sample mean is more than 3 hours below the population mean?

Recognize what information hydrogeologists collect and its importance in studying groundwater systems.

Interpret diagrams and maps related to geology and hydrogeology, including groundwater flow and gravity fields.

Understand the human impact on groundwater quality, including sources of contamination.

Apply knowledge of groundwater flow and contamination to real-world environmental and public health issues.

---

Definitions:

Aggregate Supply

The entirety of goods and services that economic entities intend to market within a particular period in an economic environment.

Expected Price Level

The anticipated average of prices for all goods and services in an economy over a future period.

Labor Contracts

Agreements between employers and employees or unions that define terms of employment, salaries, benefits, and working conditions.

Short-run Phillips Curve

A graphical representation showing the inverse relationship between unemployment rates and inflation rates in the short-term.