User Account

All Pages

Population standard deviation

Assignment Help Basic Statistics
Reference no: EM132188417

A psychology researcher who does work in creativity wants to determine whether her sample of 50-year-old adults (N = 150) differs statistically from the population of 50-year-olds in intelligence. For her sample, she calculates the following: Mean = 109, SD = 10. (Hint: By definition, the mean IQ of this population is 100 and the population standard deviation is 15. Another hint: Use the z-test here!) 

  • Null hypothesis:
  • Alternative hypothesis:
  • Statistical test:
  • Significance level (alpha = .05)
  • Critical region for rejecting null hypothesis:
  • Calculate the statistic:
  • Decision:

Reference no: EM132188417

Questions Cloud

Mean iq of this population : A psychology researcher who does work in creativity wants to determine whether her sample of 50-year-old adults (N = 150) differs statistically
Explain the change you think is needed to address : Explain the change you think is needed to address these issues and factors that might influence that change. Explain how you might apply the theory.
Examine the underlying historical and economic reasons : The driving force behind these alternatives is to save taxpayer money yet still demand offender accountability and impose sanctions for criminal behavior.
Compare the three basic types of evaluation : Compare and contrast the three basic types of evaluation in Family Life Education, and explain how you would use each of the three (not just one).
Population standard deviation : A psychology researcher who does work in creativity wants to determine whether her sample of 50-year-old adults (N = 150) differs statistically
Identify and discuss a significant issue : Identify and discuss a significant issue which you feel is not being adequately addressed in education. Describe any unacceptable effects in an educational.
Confidence interval for the mean iq of missourians : Calculate the 95% confidence interval for the mean IQ of Missourians.
How does source credibility affect communication : How does source credibility affect communication in the organization? What approaches to management are present in the organization?
What is block ownership : What is block ownership? Briefly explain how regulatory agencies and legal systems affect corporate governance?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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