User Account

All Pages

Significant difference at the level

Assignment Help Basic Statistics
Reference no: EM132153549

Several police officers were tested in an experiment to determine whether or not a suspects' behavior affected the officer's ability to accurately describe them. Police offers interrogated volunteer "suspects." Some "suspects" were hostile towards their officers during interrogation and some were not hostile. The hostile "suspects" were in the test group labeled "stress" and the nonhostile "suspects" were the "nonstress" group. The officers were interviewed a week later and asked to describe their suspect. Their scores are below:

Nonstress:  n = 38, mean score (xbar) = 52.9, s = 10.9

Stress:        n = 38, mean score (xbar) = 44.2, s = 12.8

Was there a significant difference at the .01 level?

Reference no: EM132153549

Questions Cloud

Give an o time algorithm : Give an O(n + r)- time algorithm that determines whether it is possible to designate some of the wrestlers as babyfaces.
Effectiveness of airbags at saving passengers : A study is being done on the effectiveness of airbags at saving passengers' lives in car accidents. 11,380 passengers in the study
Write a stored procedure using transactional processing : Write a stored procedure using transactional processing that inserts a new row into the Vendor table and then adds at least one new .
Level of support for corporate sustainability of a randomly : Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is less than 39 points.
Significant difference at the level : The officers were interviewed a week later and asked to describe their suspect. Their scores are below:
Can you think of a way to implement both stacks in one array : The total number of elements in the combined stacks is never more than 200 at any time, but we cannot predict how many are in each stack.
What are the three basic propagation mechanisms of los : There are two questions as follows. What are the three basic propagation mechanisms of Light of Sight (LOS) transmissions?
Find the probability that the sum : Two fair dice are tossed twice. Find the probability that the sum is 10 or less on the first toss and the sum is 8 or more on the second toss.
Standard normal probabilities table : He found that the table stated his probability as 0.1131. Determine whether Alex made an error in his calculation and explain.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Suppose that pmale birth 05 a couple wishes to have

suppose that pmale birth 0.5. a couple wishes to have exactly 2 female children in their family. they will have

  A 300-kg block starts from rest at the top of a 330deg

a 3.00-kg block starts from rest at the top of a 33.0deg incline and slides 2.00 m down the incline in 1.50 s.a find

  Find the probability that all the balls in the sample

Choose a sample of size n without replacement from the urn. Find the probability that all the balls in the sample will be white.

  Output levels of six treatments

In an experiment designed to test the output levels of six treatments, the following results were obtained:

  Consider the standard deviation in interarrival

The number of cars passing a checkpoint is treated by a consulting firm as having a poisson distribution with a mean of 20 per minute. What does the firm consider the standard deviation in interarrival times to be?

  Example on sampling variability

Sampling variability refers to the idea that different samples will include different individuals

  Conclude that mean waiting time is less than three minutes

Warren Road MacBurger that the mean waiting time was 2.75 minutes. At the 0.05 significance level, can we conclude that the mean waiting time is less than three minutes?

  Construct confidence interval for average amount of cheese

If the process standard deviation is known to be σ = 0.25 grams, construct the 95% confidence interval for μ = the average amount of cheese being injected by the machine.

  Use graphical method to describe data summarized in table

Of the firms that provided blogs/forums as a marketing tool, the accompanying table gives a breakdown on the entity responsible for creating the blogs/forums. Use a graphical method to describe the data summarized in the table. Interpret the graph..

  What is the minimum score a student

If the top 1% of the students receive a $400 scholarship, what is the minimum score a student would need to score to receive the award?

  Clearly the population when undertaking research

Why is it essential to define clearly the population when undertaking research? Illustrate your answer with reference to a survey on raising the UK statutory age for retirement.

  Compare and contrast how psychologist as detective solve

Compare and contrast how the psychologist as a detective (a researcher) solves a problem to how a non-researcher solves a problem.

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