Question: A study randomized children aged 5 to 12 to either a new intervention for higher calcium levels or to standard care (16 per group). The

A study randomized children aged 5 to 12 to either a new intervention for higher calcium levels or to standard care (16 per group). The mean increase in calcium levels for the intervention group was 978 with a standard deviation of 313. In the control group the mean change was 773 with a standard deviation of 268.

a) What is the rejection region for this test? (df=n1+n2-2)

b) Test ata=0.05 if there is a statistically significant difference in mean change in calcium levels between the two study groups.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

This study investigated the effectiveness of a popular batterers' intervention program in reducing repeated violence among men who were convicted of misdemeanor domestic violence. A classical...

1.) How would you describe the research studys sample size and Sample characteristics? 2.)How would you Describe one type of statistical analysis conducted in this study? 3.) How would you Describe...

"I'm not sure we should lay out $300,000 for that automated welding machine," said Jim Alder, president of the Superior Equipment Company. "That's a lot of money, and it would cost us $84,000 for...

1 (1pt). According to the Census Bureau's American Housing Survey, the primary reason people who move close their new neighborhood is because the location is convenient to work. Based on 1990 Census...

Question 1 1.5pts Race is an example of which type of variable? Group of answer choices Dichotomous variable Ordinal variable Categorical variable Continuous variable Flag question: Question 2...

Identify the process evaluation article that you chose and explain why you selected this example. Describe the purpose of the evaluation, the informants, the questions asked, and the results of the...

Research Recherche Family caregiver burden: results of a longitudinal study of breast cancer patients and their principal caregivers Eva Grunfeld, Doug Coyle, Timothy Whelan, Jennifer Clinch, Leonard...

Object 1 WebAssign Welcome, jeremy.guillory@grandcanyon (log out) Friday, November 18 2016 03:11 AM MST Home My Assignments Grades Communication Calendar My eBooks My Ebooks Introduction to the...

An American Automobile Association (AAA) study investigated the question of whether a man or a woman was more likely to stop and ask for directions (AAA, January 2006). The situation referred to in...

Let the random variable X have the pmf (x + 1) 9 f(x) = x = -1,0, 1.

07.01-PR020 A machine was purchased 5 years ago for $12,000. At that time, its estimated life was 10 years with an estimated end-of-life salvage value of $1,200. The average annual operating and...

O Find the inverse Laplace transform, y(1) = L(Y(s)} for 5s2 + 19 Y(s) = (s2 +2s +5)(s- 1)

Consider the figure below, with three links, each with the specified transmission rate and link length. Find the end-to end delay(including the transmission delays and propagation delays on each of...

Determine the definiteness of the following symmetric matrices: 40 3 0 0 10 1 1 2 0 2 5 3 0 33 (a) (0) ( 1 -1 ;(b) ;(c) -4 3030 0504

State the range of y= 3-6 Select one: a. (-1, 1) b. (-6, 0) c. (0, 3] d. R

Equation of the tangent to the curve y =1-e2 at the point where the curve cuts y-axis is 1) x+y=0 3) 2x + y= 0 2) x + 2y = 0 4) 2x - y= 0

Determine if the overhead allocated to the product relates to a single plantwide overhead rate method, multiple production department factory overhead rate method, or activity-based costing...

What role does the community play in resilience? How does this differ from the role that personal qualities play in resilience?

What happens in classical conditioning? Provide a personal example of when this has occurred in your life.

Name two types of feedback and their effects in Skinnerian conditioning.