User Account

All Pages

What alpha level would it be significant

Assignment Help Basic Statistics
Reference no: EM1322811

Testing for population mean.

You conduct a survey of a sample of 25 members of this year's graduating students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this year's students significantly different from the long-run average? At what alpha level would it be significant?  How would this information be useful to you if you were the college register?

Reference no: EM1322811

Questions Cloud

Chi-square test for independent of attributes : Chi-square test for independent of attributes - A random sample of students is interviewed to determine if there is an association between class and attitude toward corporations?
Computing the fmin value : Compute the minimum: Graphically, Numerically with the f min search function
Describe the term organizational development : Define the term OD (Organizational development), and explain how its techniques are used to implement change.
Entities affected by industrial regulation in terms : Explain the entities affected by industrial regulation in terms of marketplace structure.
What alpha level would it be significant : Testing for population mean - How would this information be useful to you if you were the college register?
Network and critical path for aerospace launch project : Create network for aerospace launch project below and determine its critical path.
Probability of finding percentage of items weight : What percentage of items will weigh between 6.4 and 8.9 ounces?
Boundary-less organization : Define the term boundary-less organization, and explain the forms it takes.
Different values of the standard deviation : Testing for population mean - What happens as you use different levels of significance?  Different values of the standard deviation?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Finding expected shape of distribution of sample mean

Find out the expected shape of distribution of sample mean?

  Explaining difference in variances and decision rule

At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.

  The true proportion of customers who refuse to go back

Just, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur. In spite of the response from the restaurant chain, man..

  Describing increase in selling time estate sales

Statewide real estate sales agency, Farm Associates, specializes in selling farm property in state of Nebraska. At.10 significance level, has there been an increase in selling time?

  Illustrate a quantitative assessment of what our charts

Illustrate a quantitative assessment of what our charts would look like and what these new targets would do to our operations.

  Regression model-estimated regression equation

In a regression model involving 30 observations, the following estimated regression equation was obtained:

  Hypothesis proposed by the researchers

The 'interaction effect' was also important. By using the means in the table above write a statement explaining how the anti-anxiety drug appears to affect anxiety. Are the outcomes consistent with the hypothesis proposed by the researchers?

  Difference between means using mean z test

To test the difference between two means using two mean z test.

  Determining standard score a measure

In general, determine the standard score a measure of?

  Difference between the discrete and the continuous

Explain the difference between a discrete and a continuous random variable. Give two examples of each type of random variable.

  Testing for equality of variances

Testing for equality of variances - Independent random samples were taken from normal distributions of the yearly production of ships built by the International Ship Building Company under

  Explaining close decision

At 5 % level of significance, does this sample prove violation of the guideline that average patient muts pay no more than $250 out-of-pocket? Is this a close decision?

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