A question is asked of a class of 2700 freshman, and 25% of the students know the correct answer. If asample of 81 students is taken repeatedly, answer the following questions.a) What is the expected value of the mean of the sampling distribution of sample proportions?(Round to 4 decimal places)b) What is the standard deviation of the mean of the sampling distribution of sample proportions?(Round to 4 decimal places)c) What is the P(p > 0.25 )?(Round to 4 decimal places)

Given Data population proportion,p = 0.25 sample size n = 81

Answered: A question is asked of a class of 2700…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 5 customers and determining whether or not they purchase any merchandise. What is the number of sample points in the experiment?
A recent survey reports that 22% of students take the bus to campus. If 660 students commute to campusby bus, how many students participated in the study?
Last year 46% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicated that 35% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 60 business owners. How many business owners in the survey plan to provide a holiday gift to their employees this year?
Suppose 6 students take an exam, and the mean score is 82.5. Five of the student scores are as follows:95, 78, 85, 56, and 96. What is the sixth student’s score?
On a test, if 115 questions are answered and 41% of them are correct, what is the number of the answers?
In a sample of 600 college students, 87.2% said they graduated from high school. How many of the students graduated from high school?
As part of a sixth-grade class project the teacher brings to class a jar containing 200 gumballs of two different colors: red and green. Andy is asked to draw a sample of his own choosing and estimate the number of red gumballs in the jar. Andy draws a sample of 25 gumballs, of which 8 are red and 17 are green. Use Andy's sample to estimate the number of red gumballs in the jar. There are approximately Answer red gumballs in the jar.
The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours. What is the population and the sample here?
Suppose 20% of the students on campus smoke. You select two students at random. In what percentage of samples will both students be smokers?
A school newspaper reporter decides to randomly survey 17 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, she knows that 11% of students attend Tet festivities. We are interested in the number of students who will attend the festivities. How many of the 17 students do we expect to attend the festivities?
In a sample of 169 students, 16 said they have donated blood. What percent of the students have donated blood?
A random sample of 40 students from each grade level was surveyed regarding their preference for a class field trip. If there are 180 members of the 8th grade class, then what percent preferred either the museum or the sports complex? Show your work.

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

A question is asked of a class of 2700 freshman, and 25% of the students know the correct answer. If a sample of 81 students is taken repeatedly, answer the following questions.