User Account

All Pages

Population standard deviation

Assignment Help Basic Statistics
Reference no: EM131167945

An economist found that a random sample of 42 high school teachers had an average annual salary of $56,490. A previous study showed that the population standard deviation is $4150. Find a 99% confidence interval for µ, the mean annual salary of all high school teachers.

Reference no: EM131167945

Questions Cloud

What are the lowest and highest addresses : What are the lowest and highest addresses if memory is byte-addressable? What are the lowest and highest addresses if memory is word-addressable, assuming a 16-bit word?
Dependent measure into the dependent variable window : i. Analyze→General Linear Model→Univariate ii. Move your dependent measure into the Dependent Variable window. iii. Move your independent variables into the Fixed Factor(s) window.
Discuss the legal influences on judicial decisions : Discuss the legal influences on judicial decisions, including the Constitution, the facts of the case, legal precedent, and statutory and administrative law
Tell by regressing y on x and then regressing x on y : tell by regressing Y on X and then regressing X on Y? Explain. - also, provide at least one real example where the direction of causality would be ambiguous.
Population standard deviation : An economist found that a random sample of 42 high school teachers had an average annual salary of $56,490. A previous study showed that the population standard deviation is $4150. Find a 99% confidence interval for µ, the mean annual salary of al..
What questions do you have about what you observed : What questions do you have about what you observed? What additional research would you consider doing to answer these questions? What else could you observe to further understand the people or activity you observed?
What you do in terms of regression to capture timing effect : If you use this data set, as is, to regress sales on advertising, will it adequately capture the behavior that advertising in one month doesn't really affect sales in that month but only in future months?
Confidence interval for the population proportion : In a random sample of 200 high school students in a city, 120 said that they are very concerned about the cost of college. Find a 99% confidence interval for the population proportion of all high school students in the city who are very concerned ..
Explain reason why supreme court most likely accepted case : Select a recent Supreme Court case from "Recent Decisions" on the Supreme Court website http://www.supremecourt.gov/, and explain why the Supreme Court accepted it for adjudication. In other words, explain the reason why the Supreme Court most lik..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Directional-non-directional hypotheses

When computing a t-test, it is important to distinguish between directional and nondirectional hypotheses as the direction will determine the rejection regions. Describe how the rejection regions would differ according to the type of hypothesis yo..

  Determining sample-size is important step when planning a

deliverable length 2 paragraphs 300 words.sample size determinationdetermining sample-size is important step when

  Determine population mean value

What is the population mean? What is the best estimate of that value?

  A psychology class consists of 14 business students and 21

a psychology class consists of 14 business students and 21 non-business students. sixteen students in this class are

  Variability in the traffic situation

However, due to the variability in the traffic situation every morning, the standard deviation of these commutes is 5 minutes. Jenn has to be at work by 8:30 A.M. every morning.

  History of being successful at getting a donor

She has a history of being successful at getting a donor on 55 percent of her calls. If June has a quota to get at least four donors each day.

  Probability that the claim will rejected

If the manufacturer's claim is true, what is the probability that the claim will be rejected?

  A study has indicated that the sample size necessary to

a study has indicated that the sample size necessary to estimate the average electricity use by residential customers

  Find true proportion of americans in favor of gun control

Estimate the true proportion of all Americans who are in favor of gun control legislation using a 90% confidence interval.

  Determine interval estimate for the mean of population

A local university administers a comprehensive examination to the recipients of a B.S. degree in Business Administration. A sample of 5 examinations are selected at random and scored. The test scores are 56, 85, 65, 86, and 93. At 98% confidence, ..

  Problem related to average running time of movies

Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies was taken and the following running times were obtained. Assume the population of the running times is normally distributed.

  Control limits using x bar chart

Compute the probability of seven consecutive points falling above the centerline given a stable process. Is this probability associated with type I or type II error?

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