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!
The paper "Mood Food: Chocolate and Depressive Symptoms in a Cross-Sectional Analysis" (Archives of Internal Medicine [2010]: 699-703) describes a study that investigated the relationship between depression and chocolate consumption. Participants in the study were 931 adults who were not currently taking medication for depression. These participants were screened for depression using a widely used screening test. The participants were then divided into two samples based on the score on the screening test. One sample consisted of people who screened positive for depression, and the other sample consisted of people who did not screen positive for depression. Each of the study participants also completed a food frequency survey. The researchers believed that the two samples were representative of the two populations of interest- adults who would screen positive for depression and adults who would not screen positive. The paper reported that the mean number of servings of chocolate for the sample of people that screened positive for depression was 8.39 servings per month and the sample standard deviation was 14.83. For the sample of people who did not screen positive for depression, the mean number of servings per month was 5.39 and the standard deviation was 8.76. The paper did not say how many individuals were in each sample, but for the purposes of this exercise, you can assume that the 931 study participants were divided into 311 who screened positive for depression and 620 who did not screen positive. Estimate the difference in the mean number of servings of chocolate per month in the population of people who would screen positive for depression and the mean number of chocolate servings per month in the population of people who would not screen positive for depression. Use a confidence level of 90% and be sure to interpret the interval in context.
identify the role of p-values and confidence intervals within epidemiologic research and provide examples of how these
1. when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is
frequency table speednumber of balls 0 - 29430 - 591660 - 896090 - 11920a professional tennis player hit 100 balls and
1 five cards are drawn from a standard 52-card playing deck. what is the probability that all 5 cards will be of the
R.C. Geary wrote some 70 years ago that "Normality is a myth. There never was, is, nor will there ever be a Normal distribution".
suppose that x represents a single observation from the distn given by fx theta thetaxtheta - 1 for 0 lt x lt 1find
Write a complete second-order model for heat rate (y).- Fit the model to the data and give the least squares prediction equation.
A sample of eight items is chosen, and three failures are observed at the following times (in hours): 200, 240, 250. Using Handbook H-108, should the lot be accepted?
The amount of milk that the American Cookie Company sells in a given week is random. Suppose the milk sells for $2.00 per cup and it costs the store $1.50 per cup. What is the expected number of cups of milk the store will sell in a given week
What is the 95% confidence interval estimate of the population mean cost for a prescription of Zocor?
Determine the confidence interval for population mean and the Superintendent wants to determine the average amount of hours per week the student population studies at home.
Assume that the standard deviation s is known to be $5.50. Using a 0.05 level of significance, would we conclude the typical amount spent per customer is more than $20.00?
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