Describe distribution of weekly salaries being earned

Assignment Help Basic Statistics

Reference no: EM13146196

The Dean of Nursing tells students being recruited for the incoming class that one year after graduation, the university's graduates can expect to be earning a mean weekly income of $675. Assume that the dean's statement is true and that the weekly salaries one year after graduation are normally distributed with a standard deviation of $85. If one graduate is randomly selected:

a) Describe the distribution of the weekly salaries being earned one year after graduation.
b) What is the probability that the selected graduate is making between $550 and $825? If a random sample of 25 graduates is selected:
c) Describe the distribution of mean weekly salaries being earned 1 year after graduation
d) What is the probability that the sample mean is between $650 and $705?
e) Why is the z-score used in part b and d?
f) Why is the formula for z-score used in part d different from that used in part b.

Reference no: EM13146196

Questions Cloud

Why a throat infection may lead to an ear infection : The middle ear is connected to the throat by a tube called the eustachian tube. All are lines by a continuous mucus membrane. Using this info, describe why a throat infection may lead to an ear infection.

Techniques used for oil and gas explorations : Describe in 1-2 paragraphs how the techniques used for oil and gas explorations have evolved throughout the last 1000 years.What are the most common elements of in hydrocarbon molecules?

Explain heat capacities are independent of temperature : universe on assumption that heat capacities are independent of temperature

Discuss the implications of the damage : Prolonged exposure to cigarette smoke causes damage to ciliated epithelium that lines portions of the respiratory tract. Discuss the implications of the damage.

Describe distribution of weekly salaries being earned : The weekly salaries one year after graduation are normally distributed with a standard deviation of $85. If one graduate is randomly selected. Describe the distribution of the weekly salaries being earned one year after graduation.

Probl;em related to consolidated statements : Emron Company owns a 100% interest in the common stock of the Dietz Company. On January 1, 20X2, Emron sold Dietz a fixed asset that Dietz will use over a 5-year period. The asset was sold at a $5,000 profit. In the consolidated statements, this p..

Issues of transnational crime : Evaluate the likelihood of conflict and cooperation in the future on issues of transnational crime, health, and environmental problems.

How much will be required in five years to repay : How much can be lent now if $12,000 will be repaid at the end of four years? (b) How much will be required in five years to repay a $30,000 loan received now?

Discuss at least three functions of the tissue type : Explain how epithelium is classified and discuss at least three functions of the tissue type.

User Account

All Pages