Standard error of the mean, Basic Statistics

+44 141 628 6080
[email protected]

Standard error of the mean

A random sample of the ages of 69 college students has a mean of 21. The population is known to be normal with a standard deviation, ?? , of 4.

a. What is the standard error of the mean? (to 2 decimal places)

b. What is the margin of error, with 95% confidence? (to 2 decimal places)

Request for Solution File

Ask an Expert for Answer!!

Basic Statistics: Standard error of the mean

Reference No:- TGS0846136

Expected delivery within 24 Hours

Have a Question? (oR Write a Review)

Write atleast 100 words!!

Recent Questions Asked Basic Statistics

Q : Building a compound microscope using an eyepiece

Jordan is building a compound microscope using an eyepiece with a focal length of 7.50 cm and an objective with a focal length of 1.500 cm.

Q : Distribution of the number of tests

For the statistician's suggestion, what is the distribution of the number of tests needed for a group k residents? Define random variable, write down the probability mass function and state what kind of distribution it follows.

Q : Lineup in a random order for a photograph

Six students, three boys and three girls, lineup in a random order for a photograph. What is the probability that the boys and girls alternate?

Q : Calculate the work done by the torque

If the coefficient of kinetic friction between the pad and the flywheel is µk = 0.2,how many revolutions does the flywheel make before coming to rest? How long does it take for the flywheel to come to rest? Calculate the work done by the torq

Q : Standard error of the mean

A random sample of the ages of 69 college students has a mean of 21. The population is known to be normal with a standard deviation, ?? , of 4. What is the standard error of the mean? (to 2 decimal places)

Q : Determine the molarity of eachsolute at instant of mixing

One hundred mL of 0.00075 M sodium sulfate, Na2SO4, and 50.0mL of 0.15 M barium chloride, BaCl2, solutions are mixed.

Q : Confidence interval estimate of the mean amount spent

At 95% confidence, what is the margin of error? Develop a 95% confidence interval estimate of the mean amount spent for dinner.

Q : Determine when the person was murdered

Determine when the person was murdered.(Assume that the victim was healthy at the time of death. That is, assume that the temperature of the body at the time of death was 98.6F)

Q : Probability of randomly selecting an employee

What is the probability of randomly selecting an employee who spends more than 35 minutes commuting each day?

1959953

Questions
Asked

3,689

Active Tutors

1424650

Questions
Answered

Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!

ask Question

Request for Solution File

Ask an Expert for Answer!!

Basic Statistics: Standard error of the mean

Reference No:- TGS0846136

Have a Question? (oR Write a Review)

Recent Questions Asked Basic Statistics

Q : Building a compound microscope using an eyepiece

Q : Distribution of the number of tests

Q : Lineup in a random order for a photograph

Q : Calculate the work done by the torque

Q : Standard error of the mean

Q : Determine the molarity of eachsolute at instant of mixing

Q : Confidence interval estimate of the mean amount spent

Q : Determine when the person was murdered

Q : Probability of randomly selecting an employee

Examine gender inequality on a global scale

How are schools important in the struggle for power

Identify problems and concerns that contributed

How is it rational for the owner of a factory or plantation

What when people get involved in community and social change

How does the pyramid change

Statement about political systems controlled by men

Request for Solution File

Ask an Expert for Answer!!

Basic Statistics: Standard error of the mean

Reference No:- TGS0846136

Recent Questions Asked Basic Statistics

Q : Building a compound microscope using an eyepiece

Q : Distribution of the number of tests

Q : Lineup in a random order for a photograph

Q : Calculate the work done by the torque

Q : Standard error of the mean

Q : Determine the molarity of eachsolute at instant of mixing

Q : Confidence interval estimate of the mean amount spent

Q : Determine when the person was murdered

Q : Probability of randomly selecting an employee

Asked Questions