Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question: A health psychologist was interested to see if self-reported stress scores resulted in significantly different Cortisol measures. She asked a sample of patients to complete a stress questionnaire and categorised them as either being "High Stress", "Medium Stress", or "Low Stress", depending upon their responses on the questionnaire. She then measured their salivary Cortisol levels, which could range from 0 to 6 (the higher the number, the higher the Cortisol level - the measure can be assumed to be at least interval in nature).
The following data were obtained from the patients:
High Stress
Medium Stress
Low Stress
3.816622
1.047012
1.792735
3.791716
2.146911
1.422288
4.112685
2.014023
1.675610
3.877990
1.799969
1.297839
4.148395
2.402153
1.745501
4.094494
2.232413
1.461551
4.203315
1.934752
1.348446
3.969050
2.298638
1.839337
3.682800
1.416870
1.338415
3.922470
2.188166
2.003368
3.943557
2.010698
1.146607
4.095992
0.758262
1.297852
4.228955
1.704794
2.570737
3.594576
1.611385
1.226470
4.205555
1.758421
1.813969
3.720655
2.038071
1.903663
3.612999
2.219717
1.234318
4.018633
2.582688
1.402865
4.141084
3.044053
0.577023
2.427801
1.250202
Are there significant differences in the Cortisol levels of these three groups?
This is an example of a Binomial probability experiment; This is neither a Poissonnor a Binomial probability experiment; Not enough information to determine the type of experiment.
The participants in a television quiz show are picked from a large pool of applicants with approximately 60% men and 40% women. X is a random variable that gives the number of females chosen when ten participants are picked randomly.
At a .10 level of significance, use Stat Tools (or Excel) to test the sponsors' hypothesis. State the null and the alternative hypotheses and the decision rule. Finally, discuss your findings.
the lifetime of a semiconductor laser has a lognormal distribution and it is known that the mean and standard deviation
Shouldn"t say never, two have made it from maybe twenty. This one makes it, Does anyone know what the popular vote was.? What was the percentage for each leader?
Assuming that the distribution of the costs is normal, what is the probability that the average for this sample is between $400 and $425?
The mean amount of a purchase at the Smith Hardware store is $23.50 with standard deviation of $5.00. The amounts purchased follow normal distribution.
Paired samples t-test for the given data - financial advice from the voluntary organization - A local voluntary organization affiliated to the Citizens Advice Bureau offers free financial advice to residents in the area who are registered debtors
A shipping form keeps 2 cars in readiness for local delivery. Because of demands on their time and the frequency of mechanical failure, the probability that a particular car will be available when needed is 0.9.
For a binomial probability experiment, with n=150 and p=.2, it is appropriate to use the normal approximation to the binomial distribution.
Why should you use ANOVA instead of several t tests to evaluate mean differences when an experiment consists of three or more treatment conditions?
A psychologist interested in political behavior measured the square footage of the desks in the official office of four U.S. governors and of four chief executive officers (CEOs) of major U.S. corporations.
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd