User Account

All Pages

Standard deviation of the sampling distribution of sample

Assignment Help Engineering Mathematics
Reference no: EM13804688

The speed of automobiles on a section of I-95 is normally distributed with a population mean of 65 miles per hour and a population standard deviation of 8 miles per hour. A random sample of 30 cars is to be selected for a speed study.

A) What are the shape, mean, and standard deviation of the sampling distribution of the sample mean for samples of size 30?

B) What is the probability that the sample mean will be 69 miles per hour or more?

C) What is the probability that the sample mean will be between 62 and 68 miles per hour? By how much would your answer change if the sample size had been 60?

D) What is the probability that the sample mean will be less than 63 miles per hour?

2. Assume that the population proportion of adults having a college degree is 0.35. A random sample of 500 adults is to be selected to test this claim.

A) What are the shape, mean, and standard deviation of the sampling distribution of the sample proportion for samples of 500?

B) What is the probability that the sample proportion will fall within 0.03 of the population proportion?

Reference no: EM13804688

Questions Cloud

Associating numerical concepts : Please explain how you are associating numerical concepts, such as mean, median, mode, and range, to ethics. These features are the "hard" figures of data analysis. In what way do you or Granitz (2003) see them as ethical issues?
Write a paper about tragic love : Write a paper about Tragic Love.
Impact of ama on health care reform : Impact of AMA on Health Care Reform
Determine three leadership style strengths : Determine three leadership style strengths and three leadership style weaknesses of each of the selected public leaders. Evaluate the effectiveness of each public leader in terms of each leader's major successes.
Standard deviation of the sampling distribution of sample : What are the shape, mean, and standard deviation of the sampling distribution of the sample proportion for samples of 500?
Briefly expline the history of rapid prototyping : Briefly expline the history of Rapid Prototyping? What are some of the diffrent types of Rapid Prototyping used today? How is Rapid Prototyyping used in industry today? Give at least two specific example.
Determine the benefit that the simplified acquisitions metho : Determine the benefit that the simplified acquisitions methods provide to the small-business owner. Analyze how the federal government has created this process and what form of support the federal government can provide.Take  a position on whether te..
Destroy the accounts offered by euthyphro : In the Euthyphro does Socrates present his own account of piety or just destroy the accounts offered by Euthyphro? If so what is his account of piety?

Reviews

Write a Review

Engineering Mathematics Questions & Answers

  Mean, median, mode, variance, standard deviation & skewness

Calculate the mean, median, mode, variance, standard deviation and skewness.

  The explanatory and response variables

Compute the value of the correlation coefficient (r). (This computation may be done using your calculator or computer.

  Constructing a confidence interval estimate for a population

How many elephants does the researcher need to weigh so that he can be 80% confident that the average weight of elephants in his sample is within 350 pounds of the true average weight for this subspecies?

  A standard normal probabilities based problems

Are the results enough evidence to conclude that the bottles are not filled adequately at the labeled amount of 6 ounces per bottle?

  Use lagranges mean value theorem to determine a point on

use lagranges mean value theorem to determine a point on the curve y vx2 where the tangent is parallel to the chord

  What is the chance of meeting the schedule

What is the probability that the project will still finish at the originally scheduled completion date and what are the probabilities (in percent).of completing the project in 55 days, 60 days, and 65 days?

  Determine the laplace transform of the function

Determine the Laplace transform of the function by writing the function in terms of Heaviside functions and the method of Laplace transforms to solve the initial value problem

  Find the joint distribution of the random sample

Find the joint distribution of the random sample in part (c). List all assumptions made when finding this joint distribution and explain whether or not each is reasonable in this scenario.

  Problems based on bionomial distribution

Using the results from part (c) and the range rule of thumb, indentify the range of usual value.

  Elastic energy is the potential mechanical energy stored

Elastic energy is the potential mechanical energy stored

  Find the inverse function of f

Explain what each of the following mathematical statements mean in regard to the graph of f(x).With your explanation, include a DIAGRAM for each part.

  Set up a scatter diagram for speed and miles per gallon

A research analyst for an oil company wants to develop a model to predict miles per gallon based on highway speed.  An experiment is designed in which a test car is driven at speeds ranging from 10 miles per hour to 75 miles per hour.  The results ar..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd