This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Explain the difference between the population standard deviation and the sample standard deviation ... (Read 230 times)

V@ndy87

  • Hero Member
  • *****
  • Posts: 571
on: Jul 24, 2018
Explain the difference between the population standard deviation  and the sample standard deviation s.

Question 2

Suppose that amount spent by students on textbooks this semester has approximately a bell-shaped distribution. The mean amount spent was 300 and the standard deviation is 100 . A student spent 500 on textbooks. What percentile does their value correspond to?
 a. 97.5th percentile
  b. 95th percentile
  c. 5th percentile
  d. 2.5th percentile


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

rachel

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 24, 2018
Answer to Question 1

The population standard deviation is a measure of spread in the population and is a parameter (fixed value, usually unknown). The sample standard deviation is an estimate of the population standard deviation and is a statistic.

Answer to Question 2

A


V@ndy87

  • Member
  • Posts: 571
Reply 2 on: Jul 24, 2018
YES! Correct, THANKS for helping me on my review

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Genetic drift and population size. Genetic drift and population size.
Flower part number is a characteristic difference between monocots and eudicots (a) Flowers and buds Flower part number is a characteristic difference between monocots and eudicots (a) Flowers and buds
Standard Model of Elementary Particles Standard Model of Elementary Particles
Three standard sizes of cuffs: a small cuff for a child or frail adult; a normal-sized adult cuff; ... Three standard sizes of cuffs: a small cuff for a child or frail adult; a normal-sized adult cuff; ...
Population Growth Versus Stability Population Growth Versus Stability
How to quickly find the vertex of a quadratic equation that is in standard form How to quickly find the vertex of a quadratic equation that is in standard form
Video: Virtual Enzyme Kinetics & Lineweaver Burk Plot

For a complete list of videos, visit our video library